1313043431 has 16 divisors (see below), whose sum is σ = 1581480960. Its totient is φ = 1064962080.

The previous prime is 1313043397. The next prime is 1313043439. The reversal of 1313043431 is 1343403131.

It is not a de Polignac number, because 1313043431 - 2¹⁰ = 1313042407 is a prime.

It is a super-2 number, since 2×1313043431² = 3448166103384503522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313043397 and 1313043406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313043439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115745 + ... + 126581.

It is an arithmetic number, because the mean of its divisors is an integer number (98842560).

Almost surely, 2^1313043431 is an apocalyptic number.

1313043431 is a deficient number, since it is larger than the sum of its proper divisors (268437529).

1313043431 is a wasteful number, since it uses less digits than its factorization.

1313043431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11774.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1313043431 is about 36235.9411496376. The cubic root of 1313043431 is about 1095.0308731035.

Adding to 1313043431 its reverse (1343403131), we get a palindrome (2656446562).

The spelling of 1313043431 in words is "one billion, three hundred thirteen million, forty-three thousand, four hundred thirty-one".