331340433 has 4 divisors (see below), whose sum is σ = 441787248. Its totient is φ = 220893620.

The previous prime is 331340423. The next prime is 331340437. The reversal of 331340433 is 334043133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331340433 - 2²⁵ = 297786001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331340437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55223403 + ... + 55223408.

It is an arithmetic number, because the mean of its divisors is an integer number (110446812).

Almost surely, 2^331340433 is an apocalyptic number.

It is an amenable number.

331340433 is a deficient number, since it is larger than the sum of its proper divisors (110446815).

331340433 is a wasteful number, since it uses less digits than its factorization.

331340433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110446814.

The product of its (nonzero) digits is 3888, while the sum is 24.

The square root of 331340433 is about 18202.7589392378. The cubic root of 331340433 is about 691.9767114630.

Adding to 331340433 its reverse (334043133), we get a palindrome (665383566).

The spelling of 331340433 in words is "three hundred thirty-one million, three hundred forty thousand, four hundred thirty-three".