1312431045 has 8 divisors (see below), whose sum is σ = 2099889696. Its totient is φ = 699963216.

The previous prime is 1312431031. The next prime is 1312431101. The reversal of 1312431045 is 5401342131.

It is a happy number.

1312431045 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1312431045 - 2⁹ = 1312430533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43747687 + ... + 43747716.

It is an arithmetic number, because the mean of its divisors is an integer number (262486212).

Almost surely, 2^1312431045 is an apocalyptic number.

1312431045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312431045 is a deficient number, since it is larger than the sum of its proper divisors (787458651).

1312431045 is an equidigital number, since it uses as much as digits as its factorization.

1312431045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87495411.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1312431045 is about 36227.4901835609. The cubic root of 1312431045 is about 1094.8606106843.

Adding to 1312431045 its reverse (5401342131), we get a palindrome (6713773176).

The spelling of 1312431045 in words is "one billion, three hundred twelve million, four hundred thirty-one thousand, forty-five".