Search a number
-
+
31268160000 = 29335471147
BaseRepresentation
bin11101000111101110…
…100100001000000000
32222201010120002212000
4131013232210020000
51003014122110000
622210413104000
72154565655220
oct350756441000
988633502760
1031268160000
1112296074450
126087788000
132c4403272c
141728a3c080
15c3012a000
hex747ba4200

31268160000 has 1600 divisors, whose sum is σ = 147264860160. Its totient is φ = 6359040000.

The previous prime is 31268159983. The next prime is 31268160019. The reversal of 31268160000 is 6186213.

31268160000 is a `hidden beast` number, since 31 + 26 + 8 + 1 + 600 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1600).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 665279977 + ... + 665280023.

Almost surely, 231268160000 is an apocalyptic number.

31268160000 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 31268160000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73632430080).

31268160000 is an abundant number, since it is smaller than the sum of its proper divisors (115996700160).

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

31268160000 is an equidigital number, since it uses as much as digits as its factorization.

31268160000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 31268160000 in words is "thirty-one billion, two hundred sixty-eight million, one hundred sixty thousand".