131739321 has 16 divisors (see below), whose sum is σ = 204038528. Its totient is φ = 74044800.

The previous prime is 131739319. The next prime is 131739329. The reversal of 131739321 is 123937131.

It is not a de Polignac number, because 131739321 - 2¹ = 131739319 is a prime.

It is a super-3 number, since 3×131739321³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131739329) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 50140 + ... + 52701.

It is an arithmetic number, because the mean of its divisors is an integer number (12752408).

Almost surely, 2^131739321 is an apocalyptic number.

It is an amenable number.

131739321 is a deficient number, since it is larger than the sum of its proper divisors (72299207).

131739321 is a wasteful number, since it uses less digits than its factorization.

131739321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102912.

The product of its digits is 3402, while the sum is 30.

The square root of 131739321 is about 11477.7750892758. The cubic root of 131739321 is about 508.8289432318.

The spelling of 131739321 in words is "one hundred thirty-one million, seven hundred thirty-nine thousand, three hundred twenty-one".