1317326280 has 32 divisors (see below), whose sum is σ = 3951979200. Its totient is φ = 351286976.

The previous prime is 1317326279. The next prime is 1317326323. The reversal of 1317326280 is 826237131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5488740 + ... + 5488979.

It is an arithmetic number, because the mean of its divisors is an integer number (123499350).

Almost surely, 2^1317326280 is an apocalyptic number.

1317326280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1317326280 is an abundant number, since it is smaller than the sum of its proper divisors (2634652920).

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

1317326280 is a wasteful number, since it uses less digits than its factorization.

1317326280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10977733 (or 10977729 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1317326280 is about 36294.9897368769. The cubic root of 1317326280 is about 1096.2201615187.

The spelling of 1317326280 in words is "one billion, three hundred seventeen million, three hundred twenty-six thousand, two hundred eighty".