1317280431 has 16 divisors (see below), whose sum is σ = 1893911040. Its totient is φ = 811673280.

The previous prime is 1317280423. The next prime is 1317280451. The reversal of 1317280431 is 1340827131.

It is not a de Polignac number, because 1317280431 - 2³ = 1317280423 is a prime.

It is a super-2 number, since 2×1317280431² = 3470455467791091522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317280451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279495 + ... + 284168.

It is an arithmetic number, because the mean of its divisors is an integer number (118369440).

Almost surely, 2^1317280431 is an apocalyptic number.

1317280431 is a deficient number, since it is larger than the sum of its proper divisors (576630609).

1317280431 is a wasteful number, since it uses less digits than its factorization.

1317280431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563726.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1317280431 is about 36294.3581152774. The cubic root of 1317280431 is about 1096.2074435403.

The spelling of 1317280431 in words is "one billion, three hundred seventeen million, two hundred eighty thousand, four hundred thirty-one".