131335215 has 36 divisors (see below), whose sum is σ = 231838152. Its totient is φ = 63440960.

The previous prime is 131335213. The next prime is 131335223. The reversal of 131335215 is 512533131.

It is not a de Polignac number, because 131335215 - 2¹ = 131335213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131335213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 488101 + ... + 488369.

Almost surely, 2^131335215 is an apocalyptic number.

131335215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131335215 is a deficient number, since it is larger than the sum of its proper divisors (100502937).

131335215 is an equidigital number, since it uses as much as digits as its factorization.

131335215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 288 counting only the distinct ones).

The product of its digits is 1350, while the sum is 24.

The square root of 131335215 is about 11460.1577214277. The cubic root of 131335215 is about 508.3081383792.

Adding to 131335215 its reverse (512533131), we get a palindrome (643868346).

The spelling of 131335215 in words is "one hundred thirty-one million, three hundred thirty-five thousand, two hundred fifteen".