231490158 has 16 divisors (see below), whose sum is σ = 470828160. Its totient is φ = 75855416.

The previous prime is 231490153. The next prime is 231490163. The reversal of 231490158 is 851094132.

231490158 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231490153) and next prime (231490163).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231490153) 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, 326610 + ... + 327317.

It is an arithmetic number, because the mean of its divisors is an integer number (29426760).

Almost surely, 2^231490158 is an apocalyptic number.

231490158 is an abundant number, since it is smaller than the sum of its proper divisors (239338002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231490158 is a wasteful number, since it uses less digits than its factorization.

231490158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653991.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 231490158 is about 15214.8006230775. The cubic root of 231490158 is about 614.0129211738.

The spelling of 231490158 in words is "two hundred thirty-one million, four hundred ninety thousand, one hundred fifty-eight".