23203021131 has 10 divisors (see below), whose sum is σ = 34661303292. Its totient is φ = 15468680700.

The previous prime is 23203021111. The next prime is 23203021139. The reversal of 23203021131 is 13112030232.

23203021131 is a `hidden beast` number, since 2 + 320 + 302 + 11 + 31 = 666.

It is not a de Polignac number, because 23203021131 - 2⁵ = 23203021099 is a prime.

It is a super-2 number, since 2×23203021131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23203021139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 143228445 + ... + 143228606.

Almost surely, 2^23203021131 is an apocalyptic number.

23203021131 is a deficient number, since it is larger than the sum of its proper divisors (11458282161).

23203021131 is an equidigital number, since it uses as much as digits as its factorization.

23203021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286457063 (or 286457054 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23203021131 its reverse (13112030232), we get a palindrome (36315051363).

The spelling of 23203021131 in words is "twenty-three billion, two hundred three million, twenty-one thousand, one hundred thirty-one".