1356116531 has 16 divisors (see below), whose sum is σ = 1749047040. Its totient is φ = 1020274080.

The previous prime is 1356116527. The next prime is 1356116549.

1356116531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1356116531 - 2² = 1356116527 is a prime.

It is a super-2 number, since 2×1356116531² = 3678104091302947922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1356116561) 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, 301421 + ... + 305886.

It is an arithmetic number, because the mean of its divisors is an integer number (109315440).

Almost surely, 2^1356116531 is an apocalyptic number.

1356116531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1356116531 is a deficient number, since it is larger than the sum of its proper divisors (392930509).

1356116531 is a wasteful number, since it uses less digits than its factorization.

1356116531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607354.

The product of its digits is 8100, while the sum is 32.

The square root of 1356116531 is about 36825.4875188367. The cubic root of 1356116531 is about 1106.8760827001.

The spelling of 1356116531 in words is "one billion, three hundred fifty-six million, one hundred sixteen thousand, five hundred thirty-one".