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131020015200 = 25352238328597
BaseRepresentation
bin111101000000101100…
…1101100011001100000
3110112012000021101102120
41322001121230121200
54121312110441300
6140104553344240
712315540516414
oct1720131543140
9415160241376
10131020015200
11506244236a8
1221486408080
13c4802cc019
1464acb46d44
15361c69a3a0
hex1e8166c660

131020015200 has 288 divisors, whose sum is σ = 450389673216. Its totient is φ = 33015797760.

The previous prime is 131020015183. The next prime is 131020015229. The reversal of 131020015200 is 2510020131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131020015200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4567302 + ... + 4595898.

It is an arithmetic number, because the mean of its divisors is an integer number (1563853032).

Almost surely, 2131020015200 is an apocalyptic number.

131020015200 is a gapful number since it is divisible by the number (10) 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 131020015200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225194836608).

131020015200 is an abundant number, since it is smaller than the sum of its proper divisors (319369658016).

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

131020015200 is a wasteful number, since it uses less digits than its factorization.

131020015200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28726 (or 28713 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 131020015200 its reverse (2510020131), we get a palindrome (133530035331).

The spelling of 131020015200 in words is "one hundred thirty-one billion, twenty million, fifteen thousand, two hundred".