1151312131 has 12 divisors (see below), whose sum is σ = 1262482240. Its totient is φ = 1048625280.

The previous prime is 1151312111. The next prime is 1151312137. The reversal of 1151312131 is 1312131511.

It is not a de Polignac number, because 1151312131 - 2²⁵ = 1117757699 is a prime.

It is a super-2 number, since 2×1151312131² = 2651039245975522322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1151312099 and 1151312108.

It is not an unprimeable number, because it can be changed into a prime (1151312137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55296 + ... + 73213.

Almost surely, 2^1151312131 is an apocalyptic number.

1151312131 is a deficient number, since it is larger than the sum of its proper divisors (111170109).

1151312131 is a wasteful number, since it uses less digits than its factorization.

1151312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128574 (or 128557 counting only the distinct ones).

The product of its digits is 90, while the sum is 19.

The square root of 1151312131 is about 33930.9907164527. The cubic root of 1151312131 is about 1048.0878672103.

Adding to 1151312131 its reverse (1312131511), we get a palindrome (2463443642).

The spelling of 1151312131 in words is "one billion, one hundred fifty-one million, three hundred twelve thousand, one hundred thirty-one".