20072031 has 32 divisors (see below), whose sum is σ = 33039360. Its totient is φ = 10585344.

The previous prime is 20072029. The next prime is 20072047. The reversal of 20072031 is 13027002.

It is not a de Polignac number, because 20072031 - 2¹ = 20072029 is a prime.

It is a super-2 number, since 2×20072031² = 805772856929922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20072031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072051) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 13291 + ... + 14723.

It is an arithmetic number, because the mean of its divisors is an integer number (1032480).

Almost surely, 2^20072031 is an apocalyptic number.

20072031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20072031 is a deficient number, since it is larger than the sum of its proper divisors (12967329).

20072031 is a wasteful number, since it uses less digits than its factorization.

20072031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20072031 is about 4480.1820275520. The cubic root of 20072031 is about 271.7672415865.

Adding to 20072031 its reverse (13027002), we get a palindrome (33099033).

The spelling of 20072031 in words is "twenty million, seventy-two thousand, thirty-one".