20031308 has 18 divisors (see below), whose sum is σ = 38532228. Its totient is φ = 9104920.

The previous prime is 20031293. The next prime is 20031311. The reversal of 20031308 is 80313002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20210 + ... + 21177.

Almost surely, 2^20031308 is an apocalyptic number.

It is an amenable number.

20031308 is a deficient number, since it is larger than the sum of its proper divisors (18500920).

20031308 is a wasteful number, since it uses less digits than its factorization.

20031308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41413 (or 41400 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20031308 is about 4475.6349270243. The cubic root of 20031308 is about 271.5833261281.

The spelling of 20031308 in words is "twenty million, thirty-one thousand, three hundred eight".