20013232031 has 32 divisors (see below), whose sum is σ = 23822100288. Its totient is φ = 16639395840.

The previous prime is 20013232007. The next prime is 20013232037. The reversal of 20013232031 is 13023231002.

It is a cyclic number.

It is not a de Polignac number, because 20013232031 - 2⁶ = 20013231967 is a prime.

It is a super-3 number, since 3×20013232031³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013232037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478736 + ... + 518858.

It is an arithmetic number, because the mean of its divisors is an integer number (744440634).

Almost surely, 2^20013232031 is an apocalyptic number.

20013232031 is a deficient number, since it is larger than the sum of its proper divisors (3808868257).

20013232031 is a wasteful number, since it uses less digits than its factorization.

20013232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40251.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20013232031 its reverse (13023231002), we get a palindrome (33036463033).

The spelling of 20013232031 in words is "twenty billion, thirteen million, two hundred thirty-two thousand, thirty-one".