331345361 has 2 divisors, whose sum is σ = 331345362. Its totient is φ = 331345360.

The previous prime is 331345303. The next prime is 331345369. The reversal of 331345361 is 163543133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303456400 + 27888961 = 17420^2 + 5281^2 .

It is a cyclic number.

It is not a de Polignac number, because 331345361 - 2¹⁸ = 331083217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331345369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165672680 + 165672681.

It is an arithmetic number, because the mean of its divisors is an integer number (165672681).

Almost surely, 2^331345361 is an apocalyptic number.

It is an amenable number.

331345361 is a deficient number, since it is larger than the sum of its proper divisors (1).

331345361 is an equidigital number, since it uses as much as digits as its factorization.

331345361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 29.

The square root of 331345361 is about 18202.8943028300. The cubic root of 331345361 is about 691.9801420176.

Adding to 331345361 its reverse (163543133), we get a palindrome (494888494).

The spelling of 331345361 in words is "three hundred thirty-one million, three hundred forty-five thousand, three hundred sixty-one".