315643401 has 12 divisors (see below), whose sum is σ = 456713712. Its totient is φ = 210066936.

The previous prime is 315643381. The next prime is 315643423. The reversal of 315643401 is 104346513.

315643401 is a `hidden beast` number, since 3 + 15 + 643 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 315643401 - 2⁹ = 315642889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315643441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24591 + ... + 35156.

It is an arithmetic number, because the mean of its divisors is an integer number (38059476).

Almost surely, 2^315643401 is an apocalyptic number.

It is an amenable number.

315643401 is a deficient number, since it is larger than the sum of its proper divisors (141070311).

315643401 is a wasteful number, since it uses less digits than its factorization.

315643401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60340 (or 60337 counting only the distinct ones).

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

The square root of 315643401 is about 17766.3558728288. The cubic root of 315643401 is about 680.8721515384.

Adding to 315643401 its reverse (104346513), we get a palindrome (419989914).

The spelling of 315643401 in words is "three hundred fifteen million, six hundred forty-three thousand, four hundred one".