131079321 has 6 divisors (see below), whose sum is σ = 189336810. Its totient is φ = 87386208.

The previous prime is 131079313. The next prime is 131079341. The reversal of 131079321 is 123970131.

It can be written as a sum of positive squares in only one way, i.e., 128936025 + 2143296 = 11355^2 + 1464^2 .

It is not a de Polignac number, because 131079321 - 2³ = 131079313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131079341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7282176 + ... + 7282193.

It is an arithmetic number, because the mean of its divisors is an integer number (31556135).

Almost surely, 2^131079321 is an apocalyptic number.

It is an amenable number.

131079321 is a deficient number, since it is larger than the sum of its proper divisors (58257489).

131079321 is a wasteful number, since it uses less digits than its factorization.

131079321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14564375 (or 14564372 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 131079321 is about 11448.9877718513. The cubic root of 131079321 is about 507.9777939433.

The spelling of 131079321 in words is "one hundred thirty-one million, seventy-nine thousand, three hundred twenty-one".