31064216 has 8 divisors (see below), whose sum is σ = 58245420. Its totient is φ = 15532104.

The previous prime is 31064179. The next prime is 31064233. The reversal of 31064216 is 61246013.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 31064191 and 31064200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1941506 + ... + 1941521.

Almost surely, 2^31064216 is an apocalyptic number.

It is an amenable number.

31064216 is a deficient number, since it is larger than the sum of its proper divisors (27181204).

31064216 is a wasteful number, since it uses less digits than its factorization.

31064216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883033 (or 3883029 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 31064216 is about 5573.5281465155. The cubic root of 31064216 is about 314.3548262808.

The spelling of 31064216 in words is "thirty-one million, sixty-four thousand, two hundred sixteen".