131155099 has 4 divisors (see below), whose sum is σ = 131195680. Its totient is φ = 131114520.

The previous prime is 131155061. The next prime is 131155133. The reversal of 131155099 is 990551131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131155099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131155009) 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, 14979 + ... + 22060.

It is an arithmetic number, because the mean of its divisors is an integer number (32798920).

Almost surely, 2^131155099 is an apocalyptic number.

131155099 is a deficient number, since it is larger than the sum of its proper divisors (40581).

131155099 is an equidigital number, since it uses as much as digits as its factorization.

131155099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40580.

The product of its (nonzero) digits is 6075, while the sum is 34.

The square root of 131155099 is about 11452.2966692275. The cubic root of 131155099 is about 508.0756637561.

The spelling of 131155099 in words is "one hundred thirty-one million, one hundred fifty-five thousand, ninety-nine".