1312986324 has 96 divisors (see below), whose sum is σ = 3353745024. Its totient is φ = 397393920.

The previous prime is 1312986251. The next prime is 1312986341. The reversal of 1312986324 is 4236892131.

It is a super-2 number, since 2×1312986324² = 3447866174022065952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3719332 + ... + 3719684.

It is an arithmetic number, because the mean of its divisors is an integer number (34934844).

Almost surely, 2^1312986324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312986324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1676872512).

1312986324 is an abundant number, since it is smaller than the sum of its proper divisors (2040758700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312986324 is a wasteful number, since it uses less digits than its factorization.

1312986324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 695 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 1312986324 is about 36235.1531527052. The cubic root of 1312986324 is about 1095.0149978138.

The spelling of 1312986324 in words is "one billion, three hundred twelve million, nine hundred eighty-six thousand, three hundred twenty-four".