331323345 has 64 divisors (see below), whose sum is σ = 611331840. Its totient is φ = 170118144.

The previous prime is 331323331. The next prime is 331323361. The reversal of 331323345 is 543323133.

It is a happy number.

331323345 is a `hidden beast` number, since 3 + 313 + 2 + 3 + 345 = 666.

It is not a de Polignac number, because 331323345 - 2⁵ = 331323313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 564142 + ... + 564728.

It is an arithmetic number, because the mean of its divisors is an integer number (9552060).

Almost surely, 2^331323345 is an apocalyptic number.

It is an amenable number.

331323345 is a deficient number, since it is larger than the sum of its proper divisors (280008495).

331323345 is a wasteful number, since it uses less digits than its factorization.

331323345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 745 counting only the distinct ones).

The product of its digits is 9720, while the sum is 27.

The square root of 331323345 is about 18202.2895537897. The cubic root of 331323345 is about 691.9648156401.

Adding to 331323345 its reverse (543323133), we get a palindrome (874646478).

The spelling of 331323345 in words is "three hundred thirty-one million, three hundred twenty-three thousand, three hundred forty-five".