1319157312 has 56 divisors (see below), whose sum is σ = 3807573792. Its totient is φ = 399744000.

The previous prime is 1319157299. The next prime is 1319157317. The reversal of 1319157312 is 2137519131.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1319157317) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 310189 + ... + 314412.

Almost surely, 2^1319157312 is an apocalyptic number.

1319157312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1319157312 is an abundant number, since it is smaller than the sum of its proper divisors (2488416480).

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

1319157312 is a wasteful number, since it uses less digits than its factorization.

1319157312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624627 (or 624617 counting only the distinct ones).

The product of its digits is 5670, while the sum is 33.

The square root of 1319157312 is about 36320.2052857635. The cubic root of 1319157312 is about 1096.7278274274.

The spelling of 1319157312 in words is "one billion, three hundred nineteen million, one hundred fifty-seven thousand, three hundred twelve".