313981863 has 8 divisors (see below), whose sum is σ = 450845808. Its totient is φ = 193219584.

The previous prime is 313981861. The next prime is 313981879. The reversal of 313981863 is 368189313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 313981863 - 2¹ = 313981861 is a prime.

It is a super-2 number, since 2×313981863² = 197169220585901538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313981861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4025370 + ... + 4025447.

It is an arithmetic number, because the mean of its divisors is an integer number (56355726).

Almost surely, 2^313981863 is an apocalyptic number.

313981863 is a deficient number, since it is larger than the sum of its proper divisors (136863945).

313981863 is a wasteful number, since it uses less digits than its factorization.

313981863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050833.

The product of its digits is 93312, while the sum is 42.

The square root of 313981863 is about 17719.5333742173. The cubic root of 313981863 is about 679.6753518061.

The spelling of 313981863 in words is "three hundred thirteen million, nine hundred eighty-one thousand, eight hundred sixty-three".