131894515 has 4 divisors (see below), whose sum is σ = 158273424. Its totient is φ = 105515608.

The previous prime is 131894437. The next prime is 131894527. The reversal of 131894515 is 515498131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515498131 = 149 ⋅3459719.

It is a cyclic number.

It is not a de Polignac number, because 131894515 - 2²⁵ = 98340083 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 13189447 + ... + 13189456.

It is an arithmetic number, because the mean of its divisors is an integer number (39568356).

Almost surely, 2^131894515 is an apocalyptic number.

131894515 is a deficient number, since it is larger than the sum of its proper divisors (26378909).

131894515 is an equidigital number, since it uses as much as digits as its factorization.

131894515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26378908.

The product of its digits is 21600, while the sum is 37.

The square root of 131894515 is about 11484.5337301956. The cubic root of 131894515 is about 509.0286715283.

The spelling of 131894515 in words is "one hundred thirty-one million, eight hundred ninety-four thousand, five hundred fifteen".