131897415 has 64 divisors (see below), whose sum is σ = 237025152. Its totient is φ = 62208000.

The previous prime is 131897413. The next prime is 131897417. The reversal of 131897415 is 514798131.

It is an interprime number because it is at equal distance from previous prime (131897413) and next prime (131897417).

It is not a de Polignac number, because 131897415 - 2¹ = 131897413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131897413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 728625 + ... + 728805.

It is an arithmetic number, because the mean of its divisors is an integer number (3703518).

Almost surely, 2^131897415 is an apocalyptic number.

131897415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131897415 is a deficient number, since it is larger than the sum of its proper divisors (105127737).

131897415 is a wasteful number, since it uses less digits than its factorization.

131897415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its digits is 30240, while the sum is 39.

The square root of 131897415 is about 11484.6599862599. The cubic root of 131897415 is about 509.0324022175.

The spelling of 131897415 in words is "one hundred thirty-one million, eight hundred ninety-seven thousand, four hundred fifteen".