131556732423 has 32 divisors (see below), whose sum is σ = 188021476800. Its totient is φ = 81813874688.

The previous prime is 131556732409. The next prime is 131556732427. The reversal of 131556732423 is 324237655131.

It is a happy number.

It is not a de Polignac number, because 131556732423 - 2³⁴ = 114376863239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131556732427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1626013 + ... + 1705001.

It is an arithmetic number, because the mean of its divisors is an integer number (5875671150).

Almost surely, 2^131556732423 is an apocalyptic number.

131556732423 is a deficient number, since it is larger than the sum of its proper divisors (56464744377).

131556732423 is an equidigital number, since it uses as much as digits as its factorization.

131556732423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79156 (or 79122 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The spelling of 131556732423 in words is "one hundred thirty-one billion, five hundred fifty-six million, seven hundred thirty-two thousand, four hundred twenty-three".