131189131 has 4 divisors (see below), whose sum is σ = 131235552. Its totient is φ = 131142712.

The previous prime is 131189111. The next prime is 131189137. The reversal of 131189131 is 131981131.

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

It is a cyclic number.

It is not a de Polignac number, because 131189131 - 2⁵ = 131189099 is a prime.

It is a super-2 number, since 2×131189131² = 34421176185070322, 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 131189131.

It is not an unprimeable number, because it can be changed into a prime (131189137) 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, 18676 + ... + 24721.

It is an arithmetic number, because the mean of its divisors is an integer number (32808888).

Almost surely, 2^131189131 is an apocalyptic number.

131189131 is a deficient number, since it is larger than the sum of its proper divisors (46421).

131189131 is an equidigital number, since it uses as much as digits as its factorization.

131189131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46420.

The product of its digits is 648, while the sum is 28.

The square root of 131189131 is about 11453.7823883641. The cubic root of 131189131 is about 508.1196049519.

The spelling of 131189131 in words is "one hundred thirty-one million, one hundred eighty-nine thousand, one hundred thirty-one".