157904432031 has 4 divisors (see below), whose sum is σ = 210539242712. Its totient is φ = 105269621352.

The previous prime is 157904432029. The next prime is 157904432033. The reversal of 157904432031 is 130234409751.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (157904432029) and next prime (157904432033).

It is not a de Polignac number, because 157904432031 - 2¹ = 157904432029 is a prime.

It is a super-2 number, since 2×157904432031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157904432033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26317405336 + ... + 26317405341.

It is an arithmetic number, because the mean of its divisors is an integer number (52634810678).

Almost surely, 2^157904432031 is an apocalyptic number.

157904432031 is a deficient number, since it is larger than the sum of its proper divisors (52634810681).

157904432031 is an equidigital number, since it uses as much as digits as its factorization.

157904432031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52634810680.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 157904432031 in words is "one hundred fifty-seven billion, nine hundred four million, four hundred thirty-two thousand, thirty-one".