15340531313 has 2 divisors, whose sum is σ = 15340531314. Its totient is φ = 15340531312.

The previous prime is 15340531267. The next prime is 15340531333. The reversal of 15340531313 is 31313504351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12766288144 + 2574243169 = 112988^2 + 50737^2 .

It is a cyclic number.

It is not a de Polignac number, because 15340531313 - 2⁸ = 15340531057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15340531333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7670265656 + 7670265657.

It is an arithmetic number, because the mean of its divisors is an integer number (7670265657).

Almost surely, 2^15340531313 is an apocalyptic number.

It is an amenable number.

15340531313 is a deficient number, since it is larger than the sum of its proper divisors (1).

15340531313 is an equidigital number, since it uses as much as digits as its factorization.

15340531313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 29.

The spelling of 15340531313 in words is "fifteen billion, three hundred forty million, five hundred thirty-one thousand, three hundred thirteen".