131531032430 has 64 divisors (see below), whose sum is σ = 279523049472. Its totient is φ = 43607790720.

The previous prime is 131531032427. The next prime is 131531032481. The reversal of 131531032430 is 34230135131.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131531032430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2856752 + ... + 2902428.

It is an arithmetic number, because the mean of its divisors is an integer number (4367547648).

Almost surely, 2^131531032430 is an apocalyptic number.

131531032430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131531032430 is an abundant number, since it is smaller than the sum of its proper divisors (147992017042).

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

131531032430 is a wasteful number, since it uses less digits than its factorization.

131531032430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47049.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 131531032430 its reverse (34230135131), we get a palindrome (165761167561).

The spelling of 131531032430 in words is "one hundred thirty-one billion, five hundred thirty-one million, thirty-two thousand, four hundred thirty".