157431404 has 12 divisors (see below), whose sum is σ = 296697744. Its totient is φ = 72660624.

The previous prime is 157431403. The next prime is 157431409. The reversal of 157431404 is 404134751.

It is a happy number.

It is a super-2 number, since 2×157431404² = 49569293930822432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157431403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1513712 + ... + 1513815.

It is an arithmetic number, because the mean of its divisors is an integer number (24724812).

Almost surely, 2^157431404 is an apocalyptic number.

It is an amenable number.

157431404 is a deficient number, since it is larger than the sum of its proper divisors (139266340).

157431404 is a wasteful number, since it uses less digits than its factorization.

157431404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027544 (or 3027542 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 157431404 is about 12547.1671703218. The cubic root of 157431404 is about 539.9627363404.

The spelling of 157431404 in words is "one hundred fifty-seven million, four hundred thirty-one thousand, four hundred four".