31232930 has 16 divisors (see below), whose sum is σ = 56471040. Its totient is φ = 12437232.

The previous prime is 31232923. The next prime is 31232947. The reversal of 31232930 is 3923213.

It is a junction number, because it is equal to n+sod(n) for n = 31232896 and 31232905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4610 + ... + 9149.

It is an arithmetic number, because the mean of its divisors is an integer number (3529440).

Almost surely, 2^31232930 is an apocalyptic number.

31232930 is a deficient number, since it is larger than the sum of its proper divisors (25238110).

31232930 is a wasteful number, since it uses less digits than its factorization.

31232930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13993.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 31232930 is about 5588.6429479794. The cubic root of 31232930 is about 314.9229004218.

The spelling of 31232930 in words is "thirty-one million, two hundred thirty-two thousand, nine hundred thirty".