157173331 has 12 divisors (see below), whose sum is σ = 183612960. Its totient is φ = 134146320.

The previous prime is 157173323. The next prime is 157173337. The reversal of 157173331 is 133371751.

157173331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157173331 - 2³ = 157173323 is a prime.

It is a super-2 number, since 2×157173331² = 49406911955271122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157173293 and 157173302.

It is not an unprimeable number, because it can be changed into a prime (157173337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5001 + ... + 18421.

It is an arithmetic number, because the mean of its divisors is an integer number (15301080).

Almost surely, 2^157173331 is an apocalyptic number.

157173331 is a deficient number, since it is larger than the sum of its proper divisors (26439629).

157173331 is a wasteful number, since it uses less digits than its factorization.

157173331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13674 (or 13667 counting only the distinct ones).

The product of its digits is 6615, while the sum is 31.

The square root of 157173331 is about 12536.8788380522. The cubic root of 157173331 is about 539.6675262505.

The spelling of 157173331 in words is "one hundred fifty-seven million, one hundred seventy-three thousand, three hundred thirty-one".