1316215131 has 24 divisors (see below), whose sum is σ = 2204573952. Its totient is φ = 683746800.

The previous prime is 1316215127. The next prime is 1316215183. The reversal of 1316215131 is 1315126131.

It is not a de Polignac number, because 1316215131 - 2² = 1316215127 is a prime.

It is a super-2 number, since 2×1316215131² = 3464844542146694322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1316215231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256455 + ... + 261536.

It is an arithmetic number, because the mean of its divisors is an integer number (91857248).

Almost surely, 2^1316215131 is an apocalyptic number.

1316215131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1316215131 is a deficient number, since it is larger than the sum of its proper divisors (888358821).

1316215131 is a wasteful number, since it uses less digits than its factorization.

1316215131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518023 (or 518012 counting only the distinct ones).

The product of its digits is 540, while the sum is 24.

The square root of 1316215131 is about 36279.6793122541. The cubic root of 1316215131 is about 1095.9118586101.

The spelling of 1316215131 in words is "one billion, three hundred sixteen million, two hundred fifteen thousand, one hundred thirty-one".