131158645 has 4 divisors (see below), whose sum is σ = 157390380. Its totient is φ = 104926912.

The previous prime is 131158637. The next prime is 131158661. The reversal of 131158645 is 546851131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31438449 + 99720196 = 5607^2 + 9986^2 .

It is a cyclic number.

It is not a de Polignac number, because 131158645 - 2³ = 131158637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131158645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13115860 + ... + 13115869.

It is an arithmetic number, because the mean of its divisors is an integer number (39347595).

Almost surely, 2^131158645 is an apocalyptic number.

It is an amenable number.

131158645 is a deficient number, since it is larger than the sum of its proper divisors (26231735).

131158645 is an equidigital number, since it uses as much as digits as its factorization.

131158645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26231734.

The product of its digits is 14400, while the sum is 34.

The square root of 131158645 is about 11452.4514842893. The cubic root of 131158645 is about 508.0802426099.

The spelling of 131158645 in words is "one hundred thirty-one million, one hundred fifty-eight thousand, six hundred forty-five".