131739073 has 4 divisors (see below), whose sum is σ = 134542080. Its totient is φ = 128936068.

The previous prime is 131739061. The next prime is 131739121. The reversal of 131739073 is 370937131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131739073 - 2²⁵ = 98184641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131739043) 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, 1401433 + ... + 1401526.

It is an arithmetic number, because the mean of its divisors is an integer number (33635520).

Almost surely, 2^131739073 is an apocalyptic number.

It is an amenable number.

131739073 is a deficient number, since it is larger than the sum of its proper divisors (2803007).

131739073 is an equidigital number, since it uses as much as digits as its factorization.

131739073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803006.

The product of its (nonzero) digits is 11907, while the sum is 34.

The square root of 131739073 is about 11477.7642857832. The cubic root of 131739073 is about 508.8286239405.

The spelling of 131739073 in words is "one hundred thirty-one million, seven hundred thirty-nine thousand, seventy-three".