20313023031 has 12 divisors (see below), whose sum is σ = 33532609552. Its totient is φ = 11607441696.

The previous prime is 20313023009. The next prime is 20313023047. The reversal of 20313023031 is 13032031302.

It is not a de Polignac number, because 20313023031 - 2¹⁰ = 20313022007 is a prime.

It is a super-2 number, since 2×20313023031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20313022995 and 20313023013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313023431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161214406 + ... + 161214531.

Almost surely, 2^20313023031 is an apocalyptic number.

20313023031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20313023031 is a deficient number, since it is larger than the sum of its proper divisors (13219586521).

20313023031 is a wasteful number, since it uses less digits than its factorization.

20313023031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322428950 (or 322428947 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20313023031 its reverse (13032031302), we get a palindrome (33345054333).

The spelling of 20313023031 in words is "twenty billion, three hundred thirteen million, twenty-three thousand, thirty-one".