23243131311 has 4 divisors (see below), whose sum is σ = 30990841752. Its totient is φ = 15495420872.

The previous prime is 23243131277. The next prime is 23243131339. The reversal of 23243131311 is 11313134232.

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 23243131311 - 2³¹ = 21095647663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23243131711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3873855216 + ... + 3873855221.

It is an arithmetic number, because the mean of its divisors is an integer number (7747710438).

Almost surely, 2^23243131311 is an apocalyptic number.

23243131311 is a deficient number, since it is larger than the sum of its proper divisors (7747710441).

23243131311 is an equidigital number, since it uses as much as digits as its factorization.

23243131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7747710440.

The product of its digits is 1296, while the sum is 24.

Adding to 23243131311 its reverse (11313134232), we get a palindrome (34556265543).

The spelling of 23243131311 in words is "twenty-three billion, two hundred forty-three million, one hundred thirty-one thousand, three hundred eleven".