313122857 has 2 divisors, whose sum is σ = 313122858. Its totient is φ = 313122856.

The previous prime is 313122839. The next prime is 313122871. The reversal of 313122857 is 758221313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312193561 + 929296 = 17669^2 + 964^2 .

It is a cyclic number.

It is not a de Polignac number, because 313122857 - 2¹⁶ = 313057321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313122877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156561428 + 156561429.

It is an arithmetic number, because the mean of its divisors is an integer number (156561429).

Almost surely, 2^313122857 is an apocalyptic number.

It is an amenable number.

313122857 is a deficient number, since it is larger than the sum of its proper divisors (1).

313122857 is an equidigital number, since it uses as much as digits as its factorization.

313122857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 313122857 is about 17695.2778164119. The cubic root of 313122857 is about 679.0549566796.

The spelling of 313122857 in words is "three hundred thirteen million, one hundred twenty-two thousand, eight hundred fifty-seven".