1317321885 has 32 divisors (see below), whose sum is σ = 2313142272. Its totient is φ = 634863680.

The previous prime is 1317321883. The next prime is 1317321893. The reversal of 1317321885 is 5881237131.

1317321885 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1317321885 - 2¹ = 1317321883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317321881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3652 + ... + 51458.

It is an arithmetic number, because the mean of its divisors is an integer number (72285696).

Almost surely, 2^1317321885 is an apocalyptic number.

1317321885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1317321885 is a deficient number, since it is larger than the sum of its proper divisors (995820387).

1317321885 is a wasteful number, since it uses less digits than its factorization.

1317321885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47993.

The product of its digits is 40320, while the sum is 39.

The square root of 1317321885 is about 36294.9291912796. The cubic root of 1317321885 is about 1096.2189424097.

The spelling of 1317321885 in words is "one billion, three hundred seventeen million, three hundred twenty-one thousand, eight hundred eighty-five".