1156413131 has 8 divisors (see below), whose sum is σ = 1222597200. Its totient is φ = 1090761120.

The previous prime is 1156413109. The next prime is 1156413143. The reversal of 1156413131 is 1313146511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1156413131 - 2²² = 1152218827 is a prime.

It is a super-2 number, since 2×1156413131² = 2674582659098446322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1156413131.

It is not an unprimeable number, because it can be changed into a prime (1156413101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128540 + ... + 137241.

It is an arithmetic number, because the mean of its divisors is an integer number (152824650).

Almost surely, 2^1156413131 is an apocalyptic number.

1156413131 is a deficient number, since it is larger than the sum of its proper divisors (66184069).

1156413131 is a wasteful number, since it uses less digits than its factorization.

1156413131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266029.

The product of its digits is 1080, while the sum is 26.

The square root of 1156413131 is about 34006.0749131681. The cubic root of 1156413131 is about 1049.6334717669.

Adding to 1156413131 its reverse (1313146511), we get a palindrome (2469559642).

The spelling of 1156413131 in words is "one billion, one hundred fifty-six million, four hundred thirteen thousand, one hundred thirty-one".