7131329 has 2 divisors, whose sum is σ = 7131330. Its totient is φ = 7131328.

The previous prime is 7131323. The next prime is 7131337. The reversal of 7131329 is 9231317.

7131329 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6225025 + 906304 = 2495^2 + 952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7131329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7131298 and 7131307.

It is not a weakly prime, because it can be changed into another prime (7131323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3565664 + 3565665.

It is an arithmetic number, because the mean of its divisors is an integer number (3565665).

Almost surely, 2^7131329 is an apocalyptic number.

It is an amenable number.

7131329 is a deficient number, since it is larger than the sum of its proper divisors (1).

7131329 is an equidigital number, since it uses as much as digits as its factorization.

7131329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 26.

The square root of 7131329 is about 2670.4548301741. The cubic root of 7131329 is about 192.4820155234.

The spelling of 7131329 in words is "seven million, one hundred thirty-one thousand, three hundred twenty-nine".