1312399508 has 48 divisors (see below), whose sum is σ = 2743910400. Its totient is φ = 537395040.

The previous prime is 1312399499. The next prime is 1312399511. The reversal of 1312399508 is 8059932131.

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 15 ways as a sum of consecutive naturals, for example, 59003 + ... + 78141.

It is an arithmetic number, because the mean of its divisors is an integer number (57164800).

Almost surely, 2^1312399508 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 1312399508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1371955200).

1312399508 is an abundant number, since it is smaller than the sum of its proper divisors (1431510892).

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

1312399508 is a wasteful number, since it uses less digits than its factorization.

1312399508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19260 (or 19258 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 1312399508 is about 36227.0549175613. The cubic root of 1312399508 is about 1094.8518409802.

The spelling of 1312399508 in words is "one billion, three hundred twelve million, three hundred ninety-nine thousand, five hundred eight".