231364217 has 8 divisors (see below), whose sum is σ = 264926016. Its totient is φ = 197929872.

The previous prime is 231364213. The next prime is 231364283. The reversal of 231364217 is 712463132.

It is a happy number.

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

It is not a de Polignac number, because 231364217 - 2² = 231364213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231364217.

It is not an unprimeable number, because it can be changed into a prime (231364213) 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, 27938 + ... + 35259.

It is an arithmetic number, because the mean of its divisors is an integer number (33115752).

Almost surely, 2^231364217 is an apocalyptic number.

It is an amenable number.

231364217 is a deficient number, since it is larger than the sum of its proper divisors (33561799).

231364217 is an equidigital number, since it uses as much as digits as its factorization.

231364217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63727.

The product of its digits is 6048, while the sum is 29.

The square root of 231364217 is about 15210.6612939740. The cubic root of 231364217 is about 613.9015508103.

The spelling of 231364217 in words is "two hundred thirty-one million, three hundred sixty-four thousand, two hundred seventeen".