20113002231 has 16 divisors (see below), whose sum is σ = 30650452224. Its totient is φ = 11492368704.

The previous prime is 20113002193. The next prime is 20113002241. The reversal of 20113002231 is 13220031102.

It is not a de Polignac number, because 20113002231 - 2⁹ = 20113001719 is a prime.

It is a super-2 number, since 2×20113002231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20113002231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113002241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462771 + ... + 504363.

It is an arithmetic number, because the mean of its divisors is an integer number (1915653264).

Almost surely, 2^20113002231 is an apocalyptic number.

20113002231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20113002231 is a deficient number, since it is larger than the sum of its proper divisors (10537449993).

20113002231 is a wasteful number, since it uses less digits than its factorization.

20113002231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64630.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20113002231 its reverse (13220031102), we get a palindrome (33333033333).

The spelling of 20113002231 in words is "twenty billion, one hundred thirteen million, two thousand, two hundred thirty-one".