313177493 has 2 divisors, whose sum is σ = 313177494. Its totient is φ = 313177492.

The previous prime is 313177489. The next prime is 313177523. The reversal of 313177493 is 394771313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187333969 + 125843524 = 13687^2 + 11218^2 .

It is an emirp because it is prime and its reverse (394771313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313177493 - 2² = 313177489 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313177463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156588746 + 156588747.

It is an arithmetic number, because the mean of its divisors is an integer number (156588747).

Almost surely, 2^313177493 is an apocalyptic number.

It is an amenable number.

313177493 is a deficient number, since it is larger than the sum of its proper divisors (1).

313177493 is an equidigital number, since it uses as much as digits as its factorization.

313177493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 38.

The square root of 313177493 is about 17696.8215507757. The cubic root of 313177493 is about 679.0944498989.

The spelling of 313177493 in words is "three hundred thirteen million, one hundred seventy-seven thousand, four hundred ninety-three".