131013185 has 8 divisors (see below), whose sum is σ = 157306536. Its totient is φ = 104750080.

The previous prime is 131013149. The next prime is 131013229. The reversal of 131013185 is 581310131.

It can be written as a sum of positive squares in 4 ways, for example, as 4765489 + 126247696 = 2183^2 + 11236^2 .

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

It is not a de Polignac number, because 131013185 - 2⁶ = 131013121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131013185.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425 + ... + 16545.

It is an arithmetic number, because the mean of its divisors is an integer number (19663317).

Almost surely, 2^131013185 is an apocalyptic number.

It is an amenable number.

131013185 is a deficient number, since it is larger than the sum of its proper divisors (26293351).

131013185 is a wasteful number, since it uses less digits than its factorization.

131013185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15123.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 131013185 is about 11446.0991171665. The cubic root of 131013185 is about 507.8923462644.

The spelling of 131013185 in words is "one hundred thirty-one million, thirteen thousand, one hundred eighty-five".