313313431 has 4 divisors (see below), whose sum is σ = 320955264. Its totient is φ = 305671600.

The previous prime is 313313411. The next prime is 313313443. The reversal of 313313431 is 134313313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134313313 = 7879 ⋅17047.

It is a cyclic number.

It is not a de Polignac number, because 313313431 - 2²⁷ = 179095703 is a prime.

It is a super-2 number, since 2×313313431² = 196330612089983522, 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 (313313411) 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, 3820855 + ... + 3820936.

It is an arithmetic number, because the mean of its divisors is an integer number (80238816).

Almost surely, 2^313313431 is an apocalyptic number.

313313431 is a deficient number, since it is larger than the sum of its proper divisors (7641833).

313313431 is an equidigital number, since it uses as much as digits as its factorization.

313313431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641832.

The product of its digits is 972, while the sum is 22.

The square root of 313313431 is about 17700.6618802801. The cubic root of 313313431 is about 679.1926917265.

Adding to 313313431 its reverse (134313313), we get a palindrome (447626744).

The spelling of 313313431 in words is "three hundred thirteen million, three hundred thirteen thousand, four hundred thirty-one".