231465542 has 32 divisors (see below), whose sum is σ = 435573504. Its totient is φ = 89618400.

The previous prime is 231465539. The next prime is 231465547. The reversal of 231465542 is 245564132.

It is a junction number, because it is equal to n+sod(n) for n = 231465499 and 231465508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231465547) 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, 20492 + ... + 29712.

It is an arithmetic number, because the mean of its divisors is an integer number (13611672).

Almost surely, 2^231465542 is an apocalyptic number.

231465542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231465542 is a deficient number, since it is larger than the sum of its proper divisors (204107962).

231465542 is a wasteful number, since it uses less digits than its factorization.

231465542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9404.

The product of its digits is 28800, while the sum is 32.

The square root of 231465542 is about 15213.9916524231. The cubic root of 231465542 is about 613.9911562775.

The spelling of 231465542 in words is "two hundred thirty-one million, four hundred sixty-five thousand, five hundred forty-two".