131157215 has 8 divisors (see below), whose sum is σ = 179872800. Its totient is φ = 89936352.

The previous prime is 131157197. The next prime is 131157223. The reversal of 131157215 is 512751131.

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 131157215 - 2⁶ = 131157151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873640 + ... + 1873709.

It is an arithmetic number, because the mean of its divisors is an integer number (22484100).

Almost surely, 2^131157215 is an apocalyptic number.

131157215 is a deficient number, since it is larger than the sum of its proper divisors (48715585).

131157215 is an equidigital number, since it uses as much as digits as its factorization.

131157215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747361.

The product of its digits is 1050, while the sum is 26.

The square root of 131157215 is about 11452.3890520712. The cubic root of 131157215 is about 508.0783960995.

The spelling of 131157215 in words is "one hundred thirty-one million, one hundred fifty-seven thousand, two hundred fifteen".