23313031309 has 2 divisors, whose sum is σ = 23313031310. Its totient is φ = 23313031308.

The previous prime is 23313031307. The next prime is 23313031349. The reversal of 23313031309 is 90313031332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15428124100 + 7884907209 = 124210^2 + 88797^2 .

It is a cyclic number.

It is not a de Polignac number, because 23313031309 - 2¹ = 23313031307 is a prime.

Together with 23313031307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23313031303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11656515654 + 11656515655.

It is an arithmetic number, because the mean of its divisors is an integer number (11656515655).

Almost surely, 2^23313031309 is an apocalyptic number.

It is an amenable number.

23313031309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23313031309 is an equidigital number, since it uses as much as digits as its factorization.

23313031309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 28.

The spelling of 23313031309 in words is "twenty-three billion, three hundred thirteen million, thirty-one thousand, three hundred nine".