131235215 has 8 divisors (see below), whose sum is σ = 157798368. Its totient is φ = 104777440.

The previous prime is 131235199. The next prime is 131235227. The reversal of 131235215 is 512532131.

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 131235215 - 2⁴ = 131235199 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, 23576 + ... + 28605.

It is an arithmetic number, because the mean of its divisors is an integer number (19724796).

Almost surely, 2^131235215 is an apocalyptic number.

131235215 is a deficient number, since it is larger than the sum of its proper divisors (26563153).

131235215 is an equidigital number, since it uses as much as digits as its factorization.

131235215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52689.

The product of its digits is 900, while the sum is 23.

The square root of 131235215 is about 11455.7939489151. The cubic root of 131235215 is about 508.1790952526.

Adding to 131235215 its reverse (512532131), we get a palindrome (643767346).

The spelling of 131235215 in words is "one hundred thirty-one million, two hundred thirty-five thousand, two hundred fifteen".