331426247 has 4 divisors (see below), whose sum is σ = 339509856. Its totient is φ = 323342640.

The previous prime is 331426243. The next prime is 331426259. The reversal of 331426247 is 742624133.

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 331426247 - 2² = 331426243 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 (331426243) 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, 4041743 + ... + 4041824.

It is an arithmetic number, because the mean of its divisors is an integer number (84877464).

Almost surely, 2^331426247 is an apocalyptic number.

331426247 is a deficient number, since it is larger than the sum of its proper divisors (8083609).

331426247 is an equidigital number, since it uses as much as digits as its factorization.

331426247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8083608.

The product of its digits is 24192, while the sum is 32.

The square root of 331426247 is about 18205.1159567853. The cubic root of 331426247 is about 692.0364447544.

The spelling of 331426247 in words is "three hundred thirty-one million, four hundred twenty-six thousand, two hundred forty-seven".