313616197 has 2 divisors, whose sum is σ = 313616198. Its totient is φ = 313616196.

The previous prime is 313616183. The next prime is 313616203. The reversal of 313616197 is 791616313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312547041 + 1069156 = 17679^2 + 1034^2 .

It is a cyclic number.

It is not a de Polignac number, because 313616197 - 2²³ = 305227589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313616117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156808098 + 156808099.

It is an arithmetic number, because the mean of its divisors is an integer number (156808099).

Almost surely, 2^313616197 is an apocalyptic number.

It is an amenable number.

313616197 is a deficient number, since it is larger than the sum of its proper divisors (1).

313616197 is an equidigital number, since it uses as much as digits as its factorization.

313616197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 313616197 is about 17709.2122072101. The cubic root of 313616197 is about 679.4113973758.

The spelling of 313616197 in words is "three hundred thirteen million, six hundred sixteen thousand, one hundred ninety-seven".