112931721 has 24 divisors (see below), whose sum is σ = 190236800. Its totient is φ = 64530648.

The previous prime is 112931683. The next prime is 112931737. The reversal of 112931721 is 127139211.

It is not a de Polignac number, because 112931721 - 2⁷ = 112931593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112931761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15205 + ... + 21378.

Almost surely, 2^112931721 is an apocalyptic number.

It is an amenable number.

112931721 is a deficient number, since it is larger than the sum of its proper divisors (77305079).

112931721 is an equidigital number, since it uses as much as digits as its factorization.

112931721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36610 (or 36593 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 112931721 is about 10626.9337534399. The cubic root of 112931721 is about 483.3614182122.

The spelling of 112931721 in words is "one hundred twelve million, nine hundred thirty-one thousand, seven hundred twenty-one".