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31113313200000 = 273255191972309
BaseRepresentation
bin1110001001100001000011…
…11110110010011110000000
311002011101220021220011022100
413010300201332302132000
513034230031134400000
6150101131520510400
76360601622426013
oct704604176623600
9132141807804270
1031113313200000
119a0609a1a7279
1235a5b7577b400
131448c85459255
14797c6ca2b37a
1538e4de446a00
hex1c4c21fb2780

31113313200000 has 1152 divisors, whose sum is σ = 118446692364000. Its totient is φ = 7816919040000.

The previous prime is 31113313199993. The next prime is 31113313200007. The reversal of 31113313200000 is 231331113.

It is a happy number.

31113313200000 is a `hidden beast` number, since 3 + 1 + 11 + 331 + 320 + 0 + 0 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (31113313199993) and next prime (31113313200007).

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113313200007) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 13474798846 + ... + 13474801154.

Almost surely, 231113313200000 is an apocalyptic number.

31113313200000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31113313200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59223346182000).

31113313200000 is an abundant number, since it is smaller than the sum of its proper divisors (87333379164000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31113313200000 is a wasteful number, since it uses less digits than its factorization.

31113313200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570 (or 2535 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31113313200000 its reverse (231331113), we get a palindrome (31113544531113).

The spelling of 31113313200000 in words is "thirty-one trillion, one hundred thirteen billion, three hundred thirteen million, two hundred thousand".