331224947 has 4 divisors (see below), whose sum is σ = 332015880. Its totient is φ = 330434016.

The previous prime is 331224919. The next prime is 331224989. The reversal of 331224947 is 749422133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 331224947 - 2¹⁸ = 330962803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331224247) 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, 394838 + ... + 395675.

It is an arithmetic number, because the mean of its divisors is an integer number (83003970).

Almost surely, 2^331224947 is an apocalyptic number.

331224947 is a deficient number, since it is larger than the sum of its proper divisors (790933).

331224947 is an equidigital number, since it uses as much as digits as its factorization.

331224947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790932.

The product of its digits is 36288, while the sum is 35.

The square root of 331224947 is about 18199.5864513455. The cubic root of 331224947 is about 691.8963078451.

The spelling of 331224947 in words is "three hundred thirty-one million, two hundred twenty-four thousand, nine hundred forty-seven".