20311032020 has 24 divisors (see below), whose sum is σ = 43376104800. Its totient is φ = 7986710432.

The previous prime is 20311032017. The next prime is 20311032023. The reversal of 20311032020 is 2023011302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20311032017) and next prime (20311032023).

It is a junction number, because it is equal to n+sod(n) for n = 20311031986 and 20311032004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311032023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8605190 + ... + 8607549.

It is an arithmetic number, because the mean of its divisors is an integer number (1807337700).

Almost surely, 2^20311032020 is an apocalyptic number.

20311032020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311032020 is an abundant number, since it is smaller than the sum of its proper divisors (23065072780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311032020 is a wasteful number, since it uses less digits than its factorization.

20311032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17212807 (or 17212805 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20311032020 its reverse (2023011302), we get a palindrome (22334043322).

The spelling of 20311032020 in words is "twenty billion, three hundred eleven million, thirty-two thousand, twenty".