157231436 has 24 divisors (see below), whose sum is σ = 292168800. Its totient is φ = 73780992.

The previous prime is 157231423. The next prime is 157231439. The reversal of 157231436 is 634132751.

157231436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (157231439) 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, 22265 + ... + 28463.

It is an arithmetic number, because the mean of its divisors is an integer number (12173700).

Almost surely, 2^157231436 is an apocalyptic number.

It is an amenable number.

157231436 is a deficient number, since it is larger than the sum of its proper divisors (134937364).

157231436 is a wasteful number, since it uses less digits than its factorization.

157231436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6593 (or 6591 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 157231436 is about 12539.1959869842. The cubic root of 157231436 is about 539.7340208185.

The spelling of 157231436 in words is "one hundred fifty-seven million, two hundred thirty-one thousand, four hundred thirty-six".