231161460 has 24 divisors (see below), whose sum is σ = 647252256. Its totient is φ = 61643040.

The previous prime is 231161449. The next prime is 231161479. The reversal of 231161460 is 64161132.

It is a self number, because there is not a number n which added to its sum of digits gives 231161460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1926286 + ... + 1926405.

It is an arithmetic number, because the mean of its divisors is an integer number (26968844).

Almost surely, 2^231161460 is an apocalyptic number.

231161460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231161460 is an abundant number, since it is smaller than the sum of its proper divisors (416090796).

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

231161460 is a wasteful number, since it uses less digits than its factorization.

231161460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852703 (or 3852701 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 231161460 is about 15203.9948697702. The cubic root of 231161460 is about 613.7221666675.

The spelling of 231161460 in words is "two hundred thirty-one million, one hundred sixty-one thousand, four hundred sixty".