12312310349 has 2 divisors, whose sum is σ = 12312310350. Its totient is φ = 12312310348.

The previous prime is 12312310313. The next prime is 12312310411. The reversal of 12312310349 is 94301321321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11776156324 + 536154025 = 108518^2 + 23155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12312310349 is a prime.

It is a super-2 number, since 2×12312310349² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312310649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156155174 + 6156155175.

It is an arithmetic number, because the mean of its divisors is an integer number (6156155175).

Almost surely, 2^12312310349 is an apocalyptic number.

It is an amenable number.

12312310349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312310349 is an equidigital number, since it uses as much as digits as its factorization.

12312310349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 12312310349 in words is "twelve billion, three hundred twelve million, three hundred ten thousand, three hundred forty-nine".