131231580215400 has 432 divisors, whose sum is σ = 517651025580000. Its totient is φ = 29704566447360.

The previous prime is 131231580215363. The next prime is 131231580215431. The reversal of 131231580215400 is 4512085132131.

131231580215400 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 3 + 1 + 580 + 21 + 54 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1861851 + ... + 16307349.

Almost surely, 2^{131231580215400} is an apocalyptic number.

131231580215400 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 131231580215400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258825512790000).

131231580215400 is an abundant number, since it is smaller than the sum of its proper divisors (386419445364600).

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

131231580215400 is a wasteful number, since it uses less digits than its factorization.

131231580215400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14445638 (or 14445619 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 131231580215400 in words is "one hundred thirty-one trillion, two hundred thirty-one billion, five hundred eighty million, two hundred fifteen thousand, four hundred".