131355215 has 8 divisors (see below), whose sum is σ = 162711168. Its totient is φ = 101694240.

The previous prime is 131355199. The next prime is 131355223. The reversal of 131355215 is 512553131.

It is a happy number.

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

It is not a de Polignac number, because 131355215 - 2⁴ = 131355199 is a prime.

It is a Duffinian number.

It is a congruent 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, 423572 + ... + 423881.

It is an arithmetic number, because the mean of its divisors is an integer number (20338896).

Almost surely, 2^131355215 is an apocalyptic number.

131355215 is a deficient number, since it is larger than the sum of its proper divisors (31355953).

131355215 is an equidigital number, since it uses as much as digits as its factorization.

131355215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847489.

The product of its digits is 2250, while the sum is 26.

The square root of 131355215 is about 11461.0302765502. The cubic root of 131355215 is about 508.3339391435. Note that the first 3 decimals are identical.

The spelling of 131355215 in words is "one hundred thirty-one million, three hundred fifty-five thousand, two hundred fifteen".