331422247 has 4 divisors (see below), whose sum is σ = 356916280. Its totient is φ = 305928216.

The previous prime is 331422233. The next prime is 331422251. The reversal of 331422247 is 742224133.

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 331422247 - 2¹⁵ = 331389479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331422277) 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, 12746997 + ... + 12747022.

It is an arithmetic number, because the mean of its divisors is an integer number (89229070).

Almost surely, 2^331422247 is an apocalyptic number.

331422247 is a deficient number, since it is larger than the sum of its proper divisors (25494033).

331422247 is a wasteful number, since it uses less digits than its factorization.

331422247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25494032.

The product of its digits is 8064, while the sum is 28.

The square root of 331422247 is about 18205.0060972250. The cubic root of 331422247 is about 692.0336606690.

The spelling of 331422247 in words is "three hundred thirty-one million, four hundred twenty-two thousand, two hundred forty-seven".