131890039 has 4 divisors (see below), whose sum is σ = 138831640. Its totient is φ = 124948440.

The previous prime is 131890021. The next prime is 131890081. The reversal of 131890039 is 930098131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131890039 - 2²³ = 123501431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131889986 and 131890013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131890439) 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, 3470772 + ... + 3470809.

It is an arithmetic number, because the mean of its divisors is an integer number (34707910).

Almost surely, 2^131890039 is an apocalyptic number.

131890039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

131890039 is a deficient number, since it is larger than the sum of its proper divisors (6941601).

131890039 is an equidigital number, since it uses as much as digits as its factorization.

131890039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6941600.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 131890039 is about 11484.3388577663. The cubic root of 131890039 is about 509.0229132952.

The spelling of 131890039 in words is "one hundred thirty-one million, eight hundred ninety thousand, thirty-nine".