313381231 has 16 divisors (see below), whose sum is σ = 340480000. Its totient is φ = 287424288.

The previous prime is 313381171. The next prime is 313381249. The reversal of 313381231 is 132183313.

It is not a de Polignac number, because 313381231 - 2²⁷ = 179163503 is a prime.

It is a super-2 number, since 2×313381231² = 196415591886150722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313381196 and 313381205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313381261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155770 + ... + 157768.

It is an arithmetic number, because the mean of its divisors is an integer number (21280000).

Almost surely, 2^313381231 is an apocalyptic number.

313381231 is a deficient number, since it is larger than the sum of its proper divisors (27098769).

313381231 is a wasteful number, since it uses less digits than its factorization.

313381231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278.

The product of its digits is 1296, while the sum is 25.

The square root of 313381231 is about 17702.5769593017. The cubic root of 313381231 is about 679.2416798842.

The spelling of 313381231 in words is "three hundred thirteen million, three hundred eighty-one thousand, two hundred thirty-one".