312313049 has 2 divisors, whose sum is σ = 312313050. Its totient is φ = 312313048.

The previous prime is 312313007. The next prime is 312313087. The reversal of 312313049 is 940313213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183331600 + 128981449 = 13540^2 + 11357^2 .

It is a cyclic number.

It is not a de Polignac number, because 312313049 - 2²⁴ = 295535833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312313649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156156524 + 156156525.

It is an arithmetic number, because the mean of its divisors is an integer number (156156525).

Almost surely, 2^312313049 is an apocalyptic number.

It is an amenable number.

312313049 is a deficient number, since it is larger than the sum of its proper divisors (1).

312313049 is an equidigital number, since it uses as much as digits as its factorization.

312313049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 312313049 is about 17672.3809657895. The cubic root of 312313049 is about 678.4690536642.

The spelling of 312313049 in words is "three hundred twelve million, three hundred thirteen thousand, forty-nine".