131082139 has 4 divisors (see below), whose sum is σ = 131393920. Its totient is φ = 130770360.

The previous prime is 131082131. The next prime is 131082151. The reversal of 131082139 is 931280131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931280131 = 59 ⋅15784409.

It is a cyclic number.

It is not a de Polignac number, because 131082139 - 2³ = 131082131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131082131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155259 + ... + 156100.

It is an arithmetic number, because the mean of its divisors is an integer number (32848480).

Almost surely, 2^131082139 is an apocalyptic number.

131082139 is a deficient number, since it is larger than the sum of its proper divisors (311781).

131082139 is an equidigital number, since it uses as much as digits as its factorization.

131082139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311780.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 131082139 is about 11449.1108388381. The cubic root of 131082139 is about 507.9814341594.

The spelling of 131082139 in words is "one hundred thirty-one million, eighty-two thousand, one hundred thirty-nine".