1315921332 has 24 divisors (see below), whose sum is σ = 3349618272. Its totient is φ = 398764000.

The previous prime is 1315921297. The next prime is 1315921349. The reversal of 1315921332 is 2331295131.

It is a self number, because there is not a number n which added to its sum of digits gives 1315921332.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4984419 + ... + 4984682.

It is an arithmetic number, because the mean of its divisors is an integer number (139567428).

Almost surely, 2^1315921332 is an apocalyptic number.

1315921332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1315921332 is an abundant number, since it is smaller than the sum of its proper divisors (2033696940).

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

1315921332 is a wasteful number, since it uses less digits than its factorization.

1315921332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9969119 (or 9969117 counting only the distinct ones).

The product of its digits is 4860, while the sum is 30.

The square root of 1315921332 is about 36275.6300014211. The cubic root of 1315921332 is about 1095.8303112094.

It can be divided in two parts, 1315921 and 332, that added together give a triangular number (1316253 = T₁₆₂₂).

The spelling of 1315921332 in words is "one billion, three hundred fifteen million, nine hundred twenty-one thousand, three hundred thirty-two".