231634542 has 32 divisors (see below), whose sum is σ = 494714880. Its totient is φ = 72142560.

The previous prime is 231634493. The next prime is 231634549. The reversal of 231634542 is 245436132.

231634542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231634542² = 107309122095099528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231634549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16078 + ... + 26865.

It is an arithmetic number, because the mean of its divisors is an integer number (15459840).

Almost surely, 2^231634542 is an apocalyptic number.

231634542 is an abundant number, since it is smaller than the sum of its proper divisors (263080338).

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

231634542 is a wasteful number, since it uses less digits than its factorization.

231634542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43008.

The product of its digits is 17280, while the sum is 30.

The square root of 231634542 is about 15219.5447369493. The cubic root of 231634542 is about 614.1405511015.

The spelling of 231634542 in words is "two hundred thirty-one million, six hundred thirty-four thousand, five hundred forty-two".