313544561 has 16 divisors (see below), whose sum is σ = 346871808. Its totient is φ = 281048400.

The previous prime is 313544551. The next prime is 313544653. The reversal of 313544561 is 165445313.

It is a cyclic number.

It is not a de Polignac number, because 313544561 - 2²⁶ = 246435697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313544551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318476 + ... + 319458.

It is an arithmetic number, because the mean of its divisors is an integer number (21679488).

Almost surely, 2^313544561 is an apocalyptic number.

It is an amenable number.

313544561 is a deficient number, since it is larger than the sum of its proper divisors (33327247).

313544561 is a wasteful number, since it uses less digits than its factorization.

313544561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its digits is 21600, while the sum is 32.

The square root of 313544561 is about 17707.1895285503. The cubic root of 313544561 is about 679.3596632057.

Adding to 313544561 its reverse (165445313), we get a palindrome (478989874).

The spelling of 313544561 in words is "three hundred thirteen million, five hundred forty-four thousand, five hundred sixty-one".