231607542 has 16 divisors (see below), whose sum is σ = 466597872. Its totient is φ = 76638720.

The previous prime is 231607477. The next prime is 231607547. The reversal of 231607542 is 245706132.

It is a super-2 number, since 2×231607542² = 107284107022563528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231607547) 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, 140059 + ... + 141702.

It is an arithmetic number, because the mean of its divisors is an integer number (29162367).

Almost surely, 2^231607542 is an apocalyptic number.

231607542 is an abundant number, since it is smaller than the sum of its proper divisors (234990330).

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

231607542 is a wasteful number, since it uses less digits than its factorization.

231607542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281903.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 231607542 is about 15218.6576937652. The cubic root of 231607542 is about 614.1166881678.

The spelling of 231607542 in words is "two hundred thirty-one million, six hundred seven thousand, five hundred forty-two".