1312413431 has 4 divisors (see below), whose sum is σ = 1499901072. Its totient is φ = 1124925792.

The previous prime is 1312413407. The next prime is 1312413433. The reversal of 1312413431 is 1343142131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1343142131 = 151 ⋅8894981.

It is a cyclic number.

It is not a de Polignac number, because 1312413431 - 2¹⁸ = 1312151287 is a prime.

It is a super-2 number, since 2×1312413431² = 3444858027738383522, 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 = 1312413397 and 1312413406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312413433) 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, 93743810 + ... + 93743823.

It is an arithmetic number, because the mean of its divisors is an integer number (374975268).

Almost surely, 2^1312413431 is an apocalyptic number.

1312413431 is a deficient number, since it is larger than the sum of its proper divisors (187487641).

1312413431 is an equidigital number, since it uses as much as digits as its factorization.

1312413431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187487640.

The product of its digits is 864, while the sum is 23.

The square root of 1312413431 is about 36227.2470800639. The cubic root of 1312413431 is about 1094.8557126591.

Adding to 1312413431 its reverse (1343142131), we get a palindrome (2655555562).

The spelling of 1312413431 in words is "one billion, three hundred twelve million, four hundred thirteen thousand, four hundred thirty-one".