331633345 has 8 divisors (see below), whose sum is σ = 398082600. Its totient is φ = 265224960.

The previous prime is 331633333. The next prime is 331633361. The reversal of 331633345 is 543336133.

It can be written as a sum of positive squares in 4 ways, for example, as 13046544 + 318586801 = 3612^2 + 17849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331633345 - 2⁷ = 331633217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12055 + ... + 28435.

It is an arithmetic number, because the mean of its divisors is an integer number (49760325).

Almost surely, 2^331633345 is an apocalyptic number.

It is an amenable number.

331633345 is a deficient number, since it is larger than the sum of its proper divisors (66449255).

331633345 is a wasteful number, since it uses less digits than its factorization.

331633345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20435.

The product of its digits is 29160, while the sum is 31.

The square root of 331633345 is about 18210.8029751574. The cubic root of 331633345 is about 692.1805587901.

Adding to 331633345 its reverse (543336133), we get a palindrome (874969478).

The spelling of 331633345 in words is "three hundred thirty-one million, six hundred thirty-three thousand, three hundred forty-five".