313172077 has 2 divisors, whose sum is σ = 313172078. Its totient is φ = 313172076.

The previous prime is 313172021. The next prime is 313172089. The reversal of 313172077 is 770271313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292204836 + 20967241 = 17094^2 + 4579^2 .

It is a cyclic number.

It is not a de Polignac number, because 313172077 - 2⁷ = 313171949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313172017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156586038 + 156586039.

It is an arithmetic number, because the mean of its divisors is an integer number (156586039).

Almost surely, 2^313172077 is an apocalyptic number.

It is an amenable number.

313172077 is a deficient number, since it is larger than the sum of its proper divisors (1).

313172077 is an equidigital number, since it uses as much as digits as its factorization.

313172077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6174, while the sum is 31.

The square root of 313172077 is about 17696.6685282852. The cubic root of 313172077 is about 679.0905351894.

The spelling of 313172077 in words is "three hundred thirteen million, one hundred seventy-two thousand, seventy-seven".