313433431 has 4 divisors (see below), whose sum is σ = 313471600. Its totient is φ = 313395264.

The previous prime is 313433399. The next prime is 313433453. The reversal of 313433431 is 134334313.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 134334313 = 19 ⋅7070227.

It is a cyclic number.

It is not a de Polignac number, because 313433431 - 2⁵ = 313433399 is a prime.

It is a super-2 number, since 2×313433431² = 196481031336863522, 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 = 313433396 and 313433405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313433531) 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 3 ways as a sum of consecutive naturals, for example, 1146 + ... + 25063.

It is an arithmetic number, because the mean of its divisors is an integer number (78367900).

Almost surely, 2^313433431 is an apocalyptic number.

313433431 is a deficient number, since it is larger than the sum of its proper divisors (38169).

313433431 is a wasteful number, since it uses less digits than its factorization.

313433431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38168.

The product of its digits is 3888, while the sum is 25.

The square root of 313433431 is about 17704.0512595281. The cubic root of 313433431 is about 679.2793916164.

Adding to 313433431 its reverse (134334313), we get a palindrome (447767744).

The spelling of 313433431 in words is "three hundred thirteen million, four hundred thirty-three thousand, four hundred thirty-one".