1317447131 has 64 divisors (see below), whose sum is σ = 1819431936. Its totient is φ = 921024000.

The previous prime is 1317447127. The next prime is 1317447161.

1317447131 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1317447131 - 2² = 1317447127 is a prime.

It is a super-2 number, since 2×1317447131² = 3471333885960262322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1317447101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8391305 + ... + 8391461.

It is an arithmetic number, because the mean of its divisors is an integer number (28428624).

Almost surely, 2^1317447131 is an apocalyptic number.

1317447131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1317447131 is a deficient number, since it is larger than the sum of its proper divisors (501984805).

1317447131 is a wasteful number, since it uses less digits than its factorization.

1317447131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its digits is 7056, while the sum is 32.

The square root of 1317447131 is about 36296.6545428088. The cubic root of 1317447131 is about 1096.2536827639.

The spelling of 1317447131 in words is "one billion, three hundred seventeen million, four hundred forty-seven thousand, one hundred thirty-one".