131507189 has 16 divisors (see below), whose sum is σ = 159900480. Its totient is φ = 106594560.

The previous prime is 131507171. The next prime is 131507191. The reversal of 131507189 is 981705131.

It is not a de Polignac number, because 131507189 - 2¹² = 131503093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131507149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14954 + ... + 22059.

It is an arithmetic number, because the mean of its divisors is an integer number (9993780).

Almost surely, 2^131507189 is an apocalyptic number.

131507189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

131507189 is a deficient number, since it is larger than the sum of its proper divisors (28393291).

131507189 is a wasteful number, since it uses less digits than its factorization.

131507189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37060.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 131507189 is about 11467.6583921915. The cubic root of 131507189 is about 508.5299059040.

The spelling of 131507189 in words is "one hundred thirty-one million, five hundred seven thousand, one hundred eighty-nine".