231214243 has 4 divisors (see below), whose sum is σ = 248999968. Its totient is φ = 213428520.

The previous prime is 231214241. The next prime is 231214259. The reversal of 231214243 is 342412132.

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 231214243 - 2¹ = 231214241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231214241) 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, 8892843 + ... + 8892868.

It is an arithmetic number, because the mean of its divisors is an integer number (62249992).

Almost surely, 2^231214243 is an apocalyptic number.

231214243 is a deficient number, since it is larger than the sum of its proper divisors (17785725).

231214243 is a wasteful number, since it uses less digits than its factorization.

231214243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17785724.

The product of its digits is 1152, while the sum is 22.

The square root of 231214243 is about 15205.7305973768. The cubic root of 231214243 is about 613.7688751916.

Adding to 231214243 its reverse (342412132), we get a palindrome (573626375).

The spelling of 231214243 in words is "two hundred thirty-one million, two hundred fourteen thousand, two hundred forty-three".