231522314 has 16 divisors (see below), whose sum is σ = 349764480. Its totient is φ = 114937440.

The previous prime is 231522307. The next prime is 231522373. The reversal of 231522314 is 413225132.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231522314.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321647 + ... + 322365.

It is an arithmetic number, because the mean of its divisors is an integer number (21860280).

Almost surely, 2^231522314 is an apocalyptic number.

231522314 is a deficient number, since it is larger than the sum of its proper divisors (118242166).

231522314 is a wasteful number, since it uses less digits than its factorization.

231522314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645.

The product of its digits is 1440, while the sum is 23.

The square root of 231522314 is about 15215.8573205719. The cubic root of 231522314 is about 614.0413504391.

Adding to 231522314 its reverse (413225132), we get a palindrome (644747446).

The spelling of 231522314 in words is "two hundred thirty-one million, five hundred twenty-two thousand, three hundred fourteen".