12313012001261 has 2 divisors, whose sum is σ = 12313012001262. Its totient is φ = 12313012001260.

The previous prime is 12313012001209. The next prime is 12313012001281. The reversal of 12313012001261 is 16210021031321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12068808012361 + 244203988900 = 3474019^2 + 494170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12313012001261 is a prime.

It is a super-2 number, since 2×12313012001261² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12313012001281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156506000630 + 6156506000631.

It is an arithmetic number, because the mean of its divisors is an integer number (6156506000631).

Almost surely, 2^{12313012001261} is an apocalyptic number.

It is an amenable number.

12313012001261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12313012001261 is an equidigital number, since it uses as much as digits as its factorization.

12313012001261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12313012001261 its reverse (16210021031321), we get a palindrome (28523033032582).

The spelling of 12313012001261 in words is "twelve trillion, three hundred thirteen billion, twelve million, one thousand, two hundred sixty-one".