1163109131 has 4 divisors (see below), whose sum is σ = 1163177712. Its totient is φ = 1163040552.

The previous prime is 1163109121. The next prime is 1163109133. The reversal of 1163109131 is 1319013611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1319013611 = 19 ⋅69421769.

It is a cyclic number.

It is not a de Polignac number, because 1163109131 - 2²⁶ = 1096000267 is a prime.

It is a super-2 number, since 2×1163109131² = 2705645701231150322, 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 1163109131.

It is not an unprimeable number, because it can be changed into a prime (1163109133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11801 + ... + 49653.

It is an arithmetic number, because the mean of its divisors is an integer number (290794428).

Almost surely, 2^1163109131 is an apocalyptic number.

1163109131 is a deficient number, since it is larger than the sum of its proper divisors (68581).

1163109131 is an equidigital number, since it uses as much as digits as its factorization.

1163109131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68580.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 1163109131 is about 34104.3858030019. The cubic root of 1163109131 is about 1051.6554780195.

The spelling of 1163109131 in words is "one billion, one hundred sixty-three million, one hundred nine thousand, one hundred thirty-one".