331041329 has 2 divisors, whose sum is σ = 331041330. Its totient is φ = 331041328.

The previous prime is 331041311. The next prime is 331041367. The reversal of 331041329 is 923140133.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318979600 + 12061729 = 17860^2 + 3473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331041329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 331041298 and 331041307.

It is not a weakly prime, because it can be changed into another prime (331041379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165520664 + 165520665.

It is an arithmetic number, because the mean of its divisors is an integer number (165520665).

Almost surely, 2^331041329 is an apocalyptic number.

It is an amenable number.

331041329 is a deficient number, since it is larger than the sum of its proper divisors (1).

331041329 is an equidigital number, since it uses as much as digits as its factorization.

331041329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 331041329 is about 18194.5411868505. The cubic root of 331041329 is about 691.7684309035.

The spelling of 331041329 in words is "three hundred thirty-one million, forty-one thousand, three hundred twenty-nine".