313020163 has 4 divisors (see below), whose sum is σ = 315014080. Its totient is φ = 311026248.

The previous prime is 313020161. The next prime is 313020187. The reversal of 313020163 is 361020313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313020163 - 2¹ = 313020161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313020163.

It is not an unprimeable number, because it can be changed into a prime (313020161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996723 + ... + 997036.

It is an arithmetic number, because the mean of its divisors is an integer number (78753520).

Almost surely, 2^313020163 is an apocalyptic number.

313020163 is a deficient number, since it is larger than the sum of its proper divisors (1993917).

313020163 is a wasteful number, since it uses less digits than its factorization.

313020163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993916.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 313020163 is about 17692.3758438487. The cubic root of 313020163 is about 678.9807126642.

Adding to 313020163 its reverse (361020313), we get a palindrome (674040476).

The spelling of 313020163 in words is "three hundred thirteen million, twenty thousand, one hundred sixty-three".