131512232250 has 96 divisors (see below), whose sum is σ = 406410421248. Its totient is φ = 30059935200.

The previous prime is 131512232233. The next prime is 131512232297. The reversal of 131512232250 is 52232215131.

131512232250 is a `hidden beast` number, since 1 + 315 + 1 + 22 + 322 + 5 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4159242 + ... + 4190741.

It is an arithmetic number, because the mean of its divisors is an integer number (4233441888).

Almost surely, 2^131512232250 is an apocalyptic number.

131512232250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131512232250 is an abundant number, since it is smaller than the sum of its proper divisors (274898188998).

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

131512232250 is a wasteful number, since it uses less digits than its factorization.

131512232250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8350013 (or 8350000 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 131512232250 its reverse (52232215131), we get a palindrome (183744447381).

The spelling of 131512232250 in words is "one hundred thirty-one billion, five hundred twelve million, two hundred thirty-two thousand, two hundred fifty".