23311313213 has 4 divisors (see below), whose sum is σ = 23312168028. Its totient is φ = 23310458400.

The previous prime is 23311313159. The next prime is 23311313261. The reversal of 23311313213 is 31231311332.

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 13742169529 + 9569143684 = 117227^2 + 97822^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311313213 - 2¹⁴ = 23311296829 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 (23311343213) 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, 385106 + ... + 441507.

It is an arithmetic number, because the mean of its divisors is an integer number (5828042007).

Almost surely, 2^23311313213 is an apocalyptic number.

It is an amenable number.

23311313213 is a deficient number, since it is larger than the sum of its proper divisors (854815).

23311313213 is an equidigital number, since it uses as much as digits as its factorization.

23311313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854814.

The product of its digits is 972, while the sum is 23.

Adding to 23311313213 its reverse (31231311332), we get a palindrome (54542624545).

The spelling of 23311313213 in words is "twenty-three billion, three hundred eleven million, three hundred thirteen thousand, two hundred thirteen".