131612493 has 8 divisors (see below), whose sum is σ = 175546656. Its totient is φ = 87710000.

The previous prime is 131612491. The next prime is 131612531. The reversal of 131612493 is 394216131.

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

It is a cyclic number.

It is not a de Polignac number, because 131612493 - 2¹ = 131612491 is a prime.

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 131612493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131612491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4618 + ... + 16868.

It is an arithmetic number, because the mean of its divisors is an integer number (21943332).

Almost surely, 2^131612493 is an apocalyptic number.

It is an amenable number.

131612493 is a deficient number, since it is larger than the sum of its proper divisors (43934163).

131612493 is a wasteful number, since it uses less digits than its factorization.

131612493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15835.

The product of its digits is 3888, while the sum is 30.

The square root of 131612493 is about 11472.2488205234. The cubic root of 131612493 is about 508.6656043059.

The spelling of 131612493 in words is "one hundred thirty-one million, six hundred twelve thousand, four hundred ninety-three".