131158505 has 8 divisors (see below), whose sum is σ = 157469832. Its totient is φ = 104873728.

The previous prime is 131158493. The next prime is 131158523. The reversal of 131158505 is 505851131.

It can be written as a sum of positive squares in 4 ways, for example, as 48330304 + 82828201 = 6952^2 + 9101^2 .

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 131158505 - 2⁶ = 131158441 is a prime.

It is a Duffinian number.

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, 6659 + ... + 17511.

It is an arithmetic number, because the mean of its divisors is an integer number (19683729).

Almost surely, 2^131158505 is an apocalyptic number.

It is an amenable number.

131158505 is a deficient number, since it is larger than the sum of its proper divisors (26311327).

131158505 is a wasteful number, since it uses less digits than its factorization.

131158505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13275.

The product of its (nonzero) digits is 3000, while the sum is 29.

The square root of 131158505 is about 11452.4453720592. The cubic root of 131158505 is about 508.0800618332.

The spelling of 131158505 in words is "one hundred thirty-one million, one hundred fifty-eight thousand, five hundred five".