312152913349 has 2 divisors, whose sum is σ = 312152913350. Its totient is φ = 312152913348.

The previous prime is 312152913301. The next prime is 312152913361. The reversal of 312152913349 is 943319251213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160973476225 + 151179437124 = 401215^2 + 388818^2 .

It is a cyclic number.

It is not a de Polignac number, because 312152913349 - 2⁹ = 312152912837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312152919349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156076456674 + 156076456675.

It is an arithmetic number, because the mean of its divisors is an integer number (156076456675).

Almost surely, 2^312152913349 is an apocalyptic number.

It is an amenable number.

312152913349 is a deficient number, since it is larger than the sum of its proper divisors (1).

312152913349 is an equidigital number, since it uses as much as digits as its factorization.

312152913349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The spelling of 312152913349 in words is "three hundred twelve billion, one hundred fifty-two million, nine hundred thirteen thousand, three hundred forty-nine".