157304438931 has 8 divisors (see below), whose sum is σ = 209741270464. Its totient is φ = 104868616680.

The previous prime is 157304438927. The next prime is 157304438939. The reversal of 157304438931 is 139834403751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157304438931 - 2² = 157304438927 is a prime.

It is a super-2 number, since 2×157304438931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157304438939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259896 + ... + 618186.

It is an arithmetic number, because the mean of its divisors is an integer number (26217658808).

Almost surely, 2^157304438931 is an apocalyptic number.

157304438931 is a deficient number, since it is larger than the sum of its proper divisors (52436831533).

157304438931 is a wasteful number, since it uses less digits than its factorization.

157304438931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504641.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 157304438931 in words is "one hundred fifty-seven billion, three hundred four million, four hundred thirty-eight thousand, nine hundred thirty-one".