313408831 has 4 divisors (see below), whose sum is σ = 320077152. Its totient is φ = 306740512.

The previous prime is 313408813. The next prime is 313408841. The reversal of 313408831 is 138804313.

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 313408831 - 2¹³ = 313400639 is a prime.

It is a super-2 number, since 2×313408831² = 196450190697573122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313408793 and 313408802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313408841) 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, 3334090 + ... + 3334183.

It is an arithmetic number, because the mean of its divisors is an integer number (80019288).

Almost surely, 2^313408831 is an apocalyptic number.

313408831 is a deficient number, since it is larger than the sum of its proper divisors (6668321).

313408831 is an equidigital number, since it uses as much as digits as its factorization.

313408831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6668320.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 313408831 is about 17703.3564896604. The cubic root of 313408831 is about 679.2616199424.

The spelling of 313408831 in words is "three hundred thirteen million, four hundred eight thousand, eight hundred thirty-one".