131011131 has 4 divisors (see below), whose sum is σ = 174681512. Its totient is φ = 87340752.

The previous prime is 131011123. The next prime is 131011169. The reversal of 131011131 is 131110131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131011131 - 2³ = 131011123 is a prime.

It is a super-2 number, since 2×131011131² = 34327832891798322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131018131) 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, 21835186 + ... + 21835191.

It is an arithmetic number, because the mean of its divisors is an integer number (43670378).

Almost surely, 2^131011131 is an apocalyptic number.

131011131 is a deficient number, since it is larger than the sum of its proper divisors (43670381).

131011131 is an equidigital number, since it uses as much as digits as its factorization.

131011131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43670380.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 131011131 is about 11446.0093919235. The cubic root of 131011131 is about 507.8896920370.

Adding to 131011131 its reverse (131110131), we get a palindrome (262121262).

The spelling of 131011131 in words is "one hundred thirty-one million, eleven thousand, one hundred thirty-one".