131283215 has 16 divisors (see below), whose sum is σ = 184913472. Its totient is φ = 87588864.

The previous prime is 131283211. The next prime is 131283223. The reversal of 131283215 is 512382131.

It is a cyclic number.

It is not a de Polignac number, because 131283215 - 2² = 131283211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131283211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49394 + ... + 51983.

It is an arithmetic number, because the mean of its divisors is an integer number (11557092).

Almost surely, 2^131283215 is an apocalyptic number.

131283215 is a deficient number, since it is larger than the sum of its proper divisors (53630257).

131283215 is a wasteful number, since it uses less digits than its factorization.

131283215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101426.

The product of its digits is 1440, while the sum is 26.

The square root of 131283215 is about 11457.8887671333. Note that the first 3 decimals coincide. The cubic root of 131283215 is about 508.2410441313.

The spelling of 131283215 in words is "one hundred thirty-one million, two hundred eighty-three thousand, two hundred fifteen".