231739460 has 24 divisors (see below), whose sum is σ = 487095000. Its totient is φ = 92611584.

The previous prime is 231739451. The next prime is 231739483. The reversal of 231739460 is 64937132.

It can be written as a sum of positive squares in 4 ways, for example, as 43665664 + 188073796 = 6608^2 + 13714^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231739460.

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, 20342 + ... + 29618.

It is an arithmetic number, because the mean of its divisors is an integer number (20295625).

Almost surely, 2^231739460 is an apocalyptic number.

231739460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231739460 is an abundant number, since it is smaller than the sum of its proper divisors (255355540).

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

231739460 is a wasteful number, since it uses less digits than its factorization.

231739460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535 (or 10533 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 231739460 is about 15222.9911646825. The cubic root of 231739460 is about 614.2332613277.

The spelling of 231739460 in words is "two hundred thirty-one million, seven hundred thirty-nine thousand, four hundred sixty".