231460861 has 12 divisors (see below), whose sum is σ = 241381972. Its totient is φ = 221929344.

The previous prime is 231460819. The next prime is 231460883. The reversal of 231460861 is 168064132.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 33524100 + 197936761 = 5790^2 + 14069^2 .

It is not a de Polignac number, because 231460861 - 2⁹ = 231460349 is a prime.

It is a super-2 number, since 2×231460861² = 107148260349722642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231460811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131161 + ... + 132913.

Almost surely, 2^231460861 is an apocalyptic number.

It is an amenable number.

231460861 is a deficient number, since it is larger than the sum of its proper divisors (9921111).

231460861 is a wasteful number, since it uses less digits than its factorization.

231460861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 231460861 is about 15213.8378129912. The cubic root of 231460861 is about 613.9870172712.

The spelling of 231460861 in words is "two hundred thirty-one million, four hundred sixty thousand, eight hundred sixty-one".