313139143 has 4 divisors (see below), whose sum is σ = 313175160. Its totient is φ = 313103128.

The previous prime is 313139117. The next prime is 313139147. The reversal of 313139143 is 341931313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 313139143 - 2⁵ = 313139111 is a prime.

It is a super-2 number, since 2×313139143² = 196112245757548898, 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 (313139147) 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, 3996 + ... + 25342.

It is an arithmetic number, because the mean of its divisors is an integer number (78293790).

Almost surely, 2^313139143 is an apocalyptic number.

313139143 is a deficient number, since it is larger than the sum of its proper divisors (36017).

313139143 is a wasteful number, since it uses less digits than its factorization.

313139143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36016.

The product of its digits is 2916, while the sum is 28.

The square root of 313139143 is about 17695.7379896968. The cubic root of 313139143 is about 679.0667293721.

The spelling of 313139143 in words is "three hundred thirteen million, one hundred thirty-nine thousand, one hundred forty-three".