23131130311 has 4 divisors (see below), whose sum is σ = 23409818712. Its totient is φ = 22852441912.

The previous prime is 23131130303. The next prime is 23131130357. The reversal of 23131130311 is 11303113132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23131130311 - 2³ = 23131130303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131130371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139344076 + ... + 139344241.

It is an arithmetic number, because the mean of its divisors is an integer number (5852454678).

Almost surely, 2^23131130311 is an apocalyptic number.

23131130311 is a deficient number, since it is larger than the sum of its proper divisors (278688401).

23131130311 is an equidigital number, since it uses as much as digits as its factorization.

23131130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278688400.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 23131130311 its reverse (11303113132), we get a palindrome (34434243443).

The spelling of 23131130311 in words is "twenty-three billion, one hundred thirty-one million, one hundred thirty thousand, three hundred eleven".