23311402313 has 4 divisors (see below), whose sum is σ = 24324941568. Its totient is φ = 22297863060.

The previous prime is 23311402249. The next prime is 23311402343. The reversal of 23311402313 is 31320411332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23311402313 - 2⁶ = 23311402249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1013539231 = 23311402313 / (2 + 3 + 3 + 1 + 1 + 4 + 0 + 2 + 3 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23311402343) 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, 506769593 + ... + 506769638.

It is an arithmetic number, because the mean of its divisors is an integer number (6081235392).

Almost surely, 2^23311402313 is an apocalyptic number.

23311402313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23311402313 is a deficient number, since it is larger than the sum of its proper divisors (1013539255).

23311402313 is a wasteful number, since it uses less digits than its factorization.

23311402313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013539254.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 23311402313 its reverse (31320411332), we get a palindrome (54631813645).

The spelling of 23311402313 in words is "twenty-three billion, three hundred eleven million, four hundred two thousand, three hundred thirteen".