313190649 has 6 divisors (see below), whose sum is σ = 452386506. Its totient is φ = 208793760.

The previous prime is 313190641. The next prime is 313190651. The reversal of 313190649 is 946091313.

313190649 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 9 + 0 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 234549225 + 78641424 = 15315^2 + 8868^2 .

It is not a de Polignac number, because 313190649 - 2³ = 313190641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313190641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17399472 + ... + 17399489.

It is an arithmetic number, because the mean of its divisors is an integer number (75397751).

Almost surely, 2^313190649 is an apocalyptic number.

It is an amenable number.

313190649 is a deficient number, since it is larger than the sum of its proper divisors (139195857).

313190649 is a wasteful number, since it uses less digits than its factorization.

313190649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34798967 (or 34798964 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 313190649 is about 17697.1932520386. The cubic root of 313190649 is about 679.1039589278.

The spelling of 313190649 in words is "three hundred thirteen million, one hundred ninety thousand, six hundred forty-nine".