20313812 has 24 divisors (see below), whose sum is σ = 37712640. Its totient is φ = 9547200.

The previous prime is 20313809. The next prime is 20313841. The reversal of 20313812 is 21831302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9437 + ... + 11387.

It is an arithmetic number, because the mean of its divisors is an integer number (1571360).

Almost surely, 2^20313812 is an apocalyptic number.

It is an amenable number.

20313812 is a deficient number, since it is larger than the sum of its proper divisors (17398828).

20313812 is a wasteful number, since it uses less digits than its factorization.

20313812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111 (or 2109 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20313812 is about 4507.0846453112. The cubic root of 20313812 is about 272.8540951310.

The spelling of 20313812 in words is "twenty million, three hundred thirteen thousand, eight hundred twelve".