331466947 has 4 divisors (see below), whose sum is σ = 378819376. Its totient is φ = 284114520.

The previous prime is 331466923. The next prime is 331466953. The reversal of 331466947 is 749664133.

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 331466947 - 2⁷ = 331466819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331466917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23676204 + ... + 23676217.

It is an arithmetic number, because the mean of its divisors is an integer number (94704844).

Almost surely, 2^331466947 is an apocalyptic number.

331466947 is a deficient number, since it is larger than the sum of its proper divisors (47352429).

331466947 is an equidigital number, since it uses as much as digits as its factorization.

331466947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47352428.

The product of its digits is 326592, while the sum is 43.

The square root of 331466947 is about 18206.2337401232. The cubic root of 331466947 is about 692.0647715497.

The spelling of 331466947 in words is "three hundred thirty-one million, four hundred sixty-six thousand, nine hundred forty-seven".