313405641 has 12 divisors (see below), whose sum is σ = 453374532. Its totient is φ = 208624416.

The previous prime is 313405637. The next prime is 313405643. The reversal of 313405641 is 146504313.

313405641 is a `hidden beast` number, since 3 + 13 + 4 + 0 + 5 + 641 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 308740041 + 4665600 = 17571^2 + 2160^2 .

It is not a de Polignac number, because 313405641 - 2² = 313405637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313405643) 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 in 11 ways as a sum of consecutive naturals, for example, 19626 + ... + 31811.

It is an arithmetic number, because the mean of its divisors is an integer number (37781211).

Almost surely, 2^313405641 is an apocalyptic number.

It is an amenable number.

313405641 is a deficient number, since it is larger than the sum of its proper divisors (139968891).

313405641 is a wasteful number, since it uses less digits than its factorization.

313405641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52120 (or 52117 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 313405641 is about 17703.2663935218. The cubic root of 313405641 is about 679.2593153361.

Adding to 313405641 its reverse (146504313), we get a palindrome (459909954).

The spelling of 313405641 in words is "three hundred thirteen million, four hundred five thousand, six hundred forty-one".