231902022 has 16 divisors (see below), whose sum is σ = 505968192. Its totient is φ = 70273320.

The previous prime is 231902003. The next prime is 231902039. The reversal of 231902022 is 220209132.

231902022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231902022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1756768 + ... + 1756899.

It is an arithmetic number, because the mean of its divisors is an integer number (31623012).

Almost surely, 2^231902022 is an apocalyptic number.

231902022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231902022 is an abundant number, since it is smaller than the sum of its proper divisors (274066170).

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

231902022 is a wasteful number, since it uses less digits than its factorization.

231902022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513683.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 231902022 is about 15228.3295866618. The cubic root of 231902022 is about 614.3768531132.

The spelling of 231902022 in words is "two hundred thirty-one million, nine hundred two thousand, twenty-two".