20001032031 has 64 divisors (see below), whose sum is σ = 28345614336. Its totient is φ = 12533270400.

The previous prime is 20001032027. The next prime is 20001032041. The reversal of 20001032031 is 13023010002.

It is a happy number.

It is not a de Polignac number, because 20001032031 - 2² = 20001032027 is a prime.

It is a super-2 number, since 2×20001032031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20001031998 and 20001032016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001032041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 94791516 + ... + 94791726.

It is an arithmetic number, because the mean of its divisors is an integer number (442900224).

Almost surely, 2^20001032031 is an apocalyptic number.

20001032031 is a deficient number, since it is larger than the sum of its proper divisors (8344582305).

20001032031 is a wasteful number, since it uses less digits than its factorization.

20001032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20001032031 its reverse (13023010002), we get a palindrome (33024042033).

The spelling of 20001032031 in words is "twenty billion, one million, thirty-two thousand, thirty-one".