1312324431 has 16 divisors (see below), whose sum is σ = 1934987520. Its totient is φ = 784451520.

The previous prime is 1312324427. The next prime is 1312324441. The reversal of 1312324431 is 1344232131.

It is a happy number.

It is not a de Polignac number, because 1312324431 - 2² = 1312324427 is a prime.

It is a super-2 number, since 2×1312324431² = 3444390824398947522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312324441) 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, 269971 + ... + 274788.

It is an arithmetic number, because the mean of its divisors is an integer number (120936720).

Almost surely, 2^1312324431 is an apocalyptic number.

1312324431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1312324431 is a deficient number, since it is larger than the sum of its proper divisors (622663089).

1312324431 is a wasteful number, since it uses less digits than its factorization.

1312324431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544846.

The product of its digits is 1728, while the sum is 24.

The square root of 1312324431 is about 36226.0187020324. The cubic root of 1312324431 is about 1094.8309632524.

Adding to 1312324431 its reverse (1344232131), we get a palindrome (2656556562).

The spelling of 1312324431 in words is "one billion, three hundred twelve million, three hundred twenty-four thousand, four hundred thirty-one".