1312132837 has 6 divisors (see below), whose sum is σ = 1384827558. Its totient is φ = 1243072872.

The previous prime is 1312132823. The next prime is 1312132847. The reversal of 1312132837 is 7382312131.

It can be written as a sum of positive squares in only one way, i.e., 1250258881 + 61873956 = 35359^2 + 7866^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1312132837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312132799 and 1312132808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312132847) 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 5 ways as a sum of consecutive naturals, for example, 1816998 + ... + 1817719.

It is an arithmetic number, because the mean of its divisors is an integer number (230804593).

Almost surely, 2^1312132837 is an apocalyptic number.

It is an amenable number.

1312132837 is a deficient number, since it is larger than the sum of its proper divisors (72694721).

1312132837 is an equidigital number, since it uses as much as digits as its factorization.

1312132837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634755 (or 3634736 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 1312132837 is about 36223.3741802168. The cubic root of 1312132837 is about 1094.7776803782. Note that the first 3 decimals are identical.

Adding to 1312132837 its reverse (7382312131), we get a palindrome (8694444968).

The spelling of 1312132837 in words is "one billion, three hundred twelve million, one hundred thirty-two thousand, eight hundred thirty-seven".