313219969 has 2 divisors, whose sum is σ = 313219970. Its totient is φ = 313219968.

The previous prime is 313219937. The next prime is 313220009. The reversal of 313219969 is 969912313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217415025 + 95804944 = 14745^2 + 9788^2 .

It is a cyclic number.

It is not a de Polignac number, because 313219969 - 2⁵ = 313219937 is a prime.

It is a super-2 number, since 2×313219969² = 196213497960721922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313219919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156609984 + 156609985.

It is an arithmetic number, because the mean of its divisors is an integer number (156609985).

Almost surely, 2^313219969 is an apocalyptic number.

It is an amenable number.

313219969 is a deficient number, since it is larger than the sum of its proper divisors (1).

313219969 is an equidigital number, since it uses as much as digits as its factorization.

313219969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 43.

The square root of 313219969 is about 17698.0216125984. The cubic root of 313219969 is about 679.1251501807.

The spelling of 313219969 in words is "three hundred thirteen million, two hundred nineteen thousand, nine hundred sixty-nine".