131970615 has 16 divisors (see below), whose sum is σ = 241317888. Its totient is φ = 60329376.

The previous prime is 131970613. The next prime is 131970623. The reversal of 131970615 is 516079131.

It is a happy number.

It is not a de Polignac number, because 131970615 - 2¹ = 131970613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131970613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 628327 + ... + 628536.

It is an arithmetic number, because the mean of its divisors is an integer number (15082368).

Almost surely, 2^131970615 is an apocalyptic number.

131970615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131970615 is a deficient number, since it is larger than the sum of its proper divisors (109347273).

131970615 is a wasteful number, since it uses less digits than its factorization.

131970615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256878.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 131970615 is about 11487.8464039175. The cubic root of 131970615 is about 509.1265518538.

The spelling of 131970615 in words is "one hundred thirty-one million, nine hundred seventy thousand, six hundred fifteen".