313632143 has 4 divisors (see below), whose sum is σ = 342144168. Its totient is φ = 285120120.

The previous prime is 313632139. The next prime is 313632161. The reversal of 313632143 is 341236313.

It is a happy number.

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 313632143 - 2² = 313632139 is a prime.

It is a super-2 number, since 2×313632143² = 196730242245544898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313632113) 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, 14255996 + ... + 14256017.

It is an arithmetic number, because the mean of its divisors is an integer number (85536042).

Almost surely, 2^313632143 is an apocalyptic number.

313632143 is a deficient number, since it is larger than the sum of its proper divisors (28512025).

313632143 is a wasteful number, since it uses less digits than its factorization.

313632143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28512024.

The product of its digits is 3888, while the sum is 26.

The square root of 313632143 is about 17709.6624191428. The cubic root of 313632143 is about 679.4229122047.

Adding to 313632143 its reverse (341236313), we get a palindrome (654868456).

The spelling of 313632143 in words is "three hundred thirteen million, six hundred thirty-two thousand, one hundred forty-three".