331247 has 8 divisors (see below), whose sum is σ = 384000. Its totient is φ = 279864.

The previous prime is 331241. The next prime is 331249. The reversal of 331247 is 742133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331247 - 2⁴ = 331231 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 (331241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 852.

It is an arithmetic number, because the mean of its divisors is an integer number (48000).

2³³¹²⁴⁷ is an apocalyptic number.

331247 is a deficient number, since it is larger than the sum of its proper divisors (52753).

331247 is an equidigital number, since it uses as much as digits as its factorization.

331247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685.

The product of its digits is 504, while the sum is 20.

The square root of 331247 is about 575.5406154217. The cubic root of 331247 is about 69.1911663020.

The spelling of 331247 in words is "three hundred thirty-one thousand, two hundred forty-seven".