2100231231 has 16 divisors (see below), whose sum is σ = 3203238144. Its totient is φ = 1199049984.

The previous prime is 2100231193. The next prime is 2100231239. The reversal of 2100231231 is 1321320012.

It is not a de Polignac number, because 2100231231 - 2⁷ = 2100231103 is a prime.

It is a super-2 number, since 2×2100231231² = 8821942447335550722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2100231231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100231239) 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, 20946 + ... + 68111.

It is an arithmetic number, because the mean of its divisors is an integer number (200202384).

Almost surely, 2^2100231231 is an apocalyptic number.

2100231231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2100231231 is a deficient number, since it is larger than the sum of its proper divisors (1103006913).

2100231231 is a wasteful number, since it uses less digits than its factorization.

2100231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90190.

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

The square root of 2100231231 is about 45828.2798171609. The cubic root of 2100231231 is about 1280.6261647864.

Adding to 2100231231 its reverse (1321320012), we get a palindrome (3421551243).

The spelling of 2100231231 in words is "two billion, one hundred million, two hundred thirty-one thousand, two hundred thirty-one".