23312031313 has 4 divisors (see below), whose sum is σ = 23344912180. Its totient is φ = 23279150448.

The previous prime is 23312031287. The next prime is 23312031329. The reversal of 23312031313 is 31313021332.

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 7514809344 + 15797221969 = 86688^2 + 125687^2 .

It is a cyclic number.

It is not a de Polignac number, because 23312031313 - 2²¹ = 23309934161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23312031343) 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, 16439370 + ... + 16440787.

It is an arithmetic number, because the mean of its divisors is an integer number (5836228045).

Almost surely, 2^23312031313 is an apocalyptic number.

It is an amenable number.

23312031313 is a deficient number, since it is larger than the sum of its proper divisors (32880867).

23312031313 is an equidigital number, since it uses as much as digits as its factorization.

23312031313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32880866.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 23312031313 its reverse (31313021332), we get a palindrome (54625052645).

The spelling of 23312031313 in words is "twenty-three billion, three hundred twelve million, thirty-one thousand, three hundred thirteen".