23311012313 has 4 divisors (see below), whose sum is σ = 23750842788. Its totient is φ = 22871181840.

The previous prime is 23311012297. The next prime is 23311012321. The reversal of 23311012313 is 31321011332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10730473744 + 12580538569 = 103588^2 + 112163^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311012313 - 2⁴ = 23311012297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23311012363) 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, 219915158 + ... + 219915263.

It is an arithmetic number, because the mean of its divisors is an integer number (5937710697).

Almost surely, 2^23311012313 is an apocalyptic number.

It is an amenable number.

23311012313 is a deficient number, since it is larger than the sum of its proper divisors (439830475).

23311012313 is an equidigital number, since it uses as much as digits as its factorization.

23311012313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439830474.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23311012313 its reverse (31321011332), we get a palindrome (54632023645).

The spelling of 23311012313 in words is "twenty-three billion, three hundred eleven million, twelve thousand, three hundred thirteen".