20065031 has 16 divisors (see below), whose sum is σ = 23697408. Its totient is φ = 16632000.

The previous prime is 20064997. The next prime is 20065033. The reversal of 20065031 is 13056002.

It is a de Polignac number, because none of the positive numbers 2^k-20065031 is a prime.

It is a super-2 number, since 2×20065031² = 805210938061922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20065033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43106 + ... + 43568.

It is an arithmetic number, because the mean of its divisors is an integer number (1481088).

Almost surely, 2^20065031 is an apocalyptic number.

20065031 is a deficient number, since it is larger than the sum of its proper divisors (3632377).

20065031 is a wasteful number, since it uses less digits than its factorization.

20065031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20065031 is about 4479.4007411706. The cubic root of 20065031 is about 271.7356455166.

The spelling of 20065031 in words is "twenty million, sixty-five thousand, thirty-one".