313231431 has 16 divisors (see below), whose sum is σ = 435909600. Its totient is φ = 199879680.

The previous prime is 313231417. The next prime is 313231433. The reversal of 313231431 is 134132313.

It is not a de Polignac number, because 313231431 - 2⁹ = 313230919 is a prime.

It is a super-2 number, since 2×313231431² = 196227858732615522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313231398 and 313231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313231433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17506 + ... + 30543.

It is an arithmetic number, because the mean of its divisors is an integer number (27244350).

Almost surely, 2^313231431 is an apocalyptic number.

313231431 is a deficient number, since it is larger than the sum of its proper divisors (122678169).

313231431 is a wasteful number, since it uses less digits than its factorization.

313231431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48146.

The product of its digits is 648, while the sum is 21.

The square root of 313231431 is about 17698.3454311413. The cubic root of 313231431 is about 679.1334340688.

Adding to 313231431 its reverse (134132313), we get a palindrome (447363744).

The spelling of 313231431 in words is "three hundred thirteen million, two hundred thirty-one thousand, four hundred thirty-one".