231222130 has 8 divisors (see below), whose sum is σ = 416199852. Its totient is φ = 92488848.

The previous prime is 231222127. The next prime is 231222179. The reversal of 231222130 is 31222132.

231222130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 228342321 + 2879809 = 15111^2 + 1697^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11561097 + ... + 11561116.

Almost surely, 2^231222130 is an apocalyptic number.

231222130 is a deficient number, since it is larger than the sum of its proper divisors (184977722).

231222130 is a wasteful number, since it uses less digits than its factorization.

231222130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23122220.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231222130 is about 15205.9899381790. The cubic root of 231222130 is about 613.7758539140.

Adding to 231222130 its reverse (31222132), we get a palindrome (262444262).

It can be divided in two parts, 23122 and 2130, that added together give a palindrome (25252).

The spelling of 231222130 in words is "two hundred thirty-one million, two hundred twenty-two thousand, one hundred thirty".