131519231 has 8 divisors (see below), whose sum is σ = 133240464. Its totient is φ = 129808000.

The previous prime is 131519189. The next prime is 131519237. The reversal of 131519231 is 132915131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131519231 is a prime.

It is a super-2 number, since 2×131519231² = 34594616245662722, 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 131519231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131519237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26045 + ... + 30681.

It is an arithmetic number, because the mean of its divisors is an integer number (16655058).

Almost surely, 2^131519231 is an apocalyptic number.

131519231 is a deficient number, since it is larger than the sum of its proper divisors (1721233).

131519231 is a wasteful number, since it uses less digits than its factorization.

131519231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001.

The product of its digits is 810, while the sum is 26.

The square root of 131519231 is about 11468.1834219723. The cubic root of 131519231 is about 508.5454273120.

The spelling of 131519231 in words is "one hundred thirty-one million, five hundred nineteen thousand, two hundred thirty-one".