1312303031 has 16 divisors (see below), whose sum is σ = 1458216480. Its totient is φ = 1173242880.

The previous prime is 1312302941. The next prime is 1312303037. The reversal of 1312303031 is 1303032131.

It is a de Polignac number, because none of the positive numbers 2^k-1312303031 is a prime.

It is a super-2 number, since 2×1312303031² = 3444278490343573922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312303037) 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 15 ways as a sum of consecutive naturals, for example, 65231 + ... + 82943.

It is an arithmetic number, because the mean of its divisors is an integer number (91138530).

Almost surely, 2^1312303031 is an apocalyptic number.

1312303031 is a deficient number, since it is larger than the sum of its proper divisors (145913449).

1312303031 is a wasteful number, since it uses less digits than its factorization.

1312303031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17906.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1312303031 is about 36225.7233330130. The cubic root of 1312303031 is about 1094.8250121046.

Adding to 1312303031 its reverse (1303032131), we get a palindrome (2615335162).

The spelling of 1312303031 in words is "one billion, three hundred twelve million, three hundred three thousand, thirty-one".