312403404149 has 2 divisors, whose sum is σ = 312403404150. Its totient is φ = 312403404148.

The previous prime is 312403404083. The next prime is 312403404163. The reversal of 312403404149 is 941404304213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218977202500 + 93426201649 = 467950^2 + 305657^2 .

It is an emirp because it is prime and its reverse (941404304213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312403404149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312403404179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156201702074 + 156201702075.

It is an arithmetic number, because the mean of its divisors is an integer number (156201702075).

Almost surely, 2^312403404149 is an apocalyptic number.

It is an amenable number.

312403404149 is a deficient number, since it is larger than the sum of its proper divisors (1).

312403404149 is an equidigital number, since it uses as much as digits as its factorization.

312403404149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 312403404149 in words is "three hundred twelve billion, four hundred three million, four hundred four thousand, one hundred forty-nine".