1313312237 has 12 divisors (see below), whose sum is σ = 1411944576. Its totient is φ = 1221144000.

The previous prime is 1313312227. The next prime is 1313312251. The reversal of 1313312237 is 7322133131.

It is not a de Polignac number, because 1313312237 - 2⁶ = 1313312173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313312227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3389 + ... + 51362.

It is an arithmetic number, because the mean of its divisors is an integer number (117662048).

Almost surely, 2^1313312237 is an apocalyptic number.

1313312237 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1313312237 is a deficient number, since it is larger than the sum of its proper divisors (98632339).

1313312237 is an equidigital number, since it uses as much as digits as its factorization.

1313312237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54868 (or 54851 counting only the distinct ones).

The product of its digits is 2268, while the sum is 26.

The square root of 1313312237 is about 36239.6500672951. The cubic root of 1313312237 is about 1095.1055928418.

Adding to 1313312237 its reverse (7322133131), we get a palindrome (8635445368).

The spelling of 1313312237 in words is "one billion, three hundred thirteen million, three hundred twelve thousand, two hundred thirty-seven".