231212022 has 16 divisors (see below), whose sum is σ = 462623232. Its totient is φ = 77037480.

The previous prime is 231211961. The next prime is 231212057. The reversal of 231212022 is 220212132.

It is a happy number.

231212022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231211992 and 231212010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9843 + ... + 23649.

It is an arithmetic number, because the mean of its divisors is an integer number (28913952).

Almost surely, 2^231212022 is an apocalyptic number.

231212022 is an abundant number, since it is smaller than the sum of its proper divisors (231411210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231212022 is a wasteful number, since it uses less digits than its factorization.

231212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16603.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 231212022 is about 15205.6575655247. The cubic root of 231212022 is about 613.7669099363.

Adding to 231212022 its reverse (220212132), we get a palindrome (451424154).

The spelling of 231212022 in words is "two hundred thirty-one million, two hundred twelve thousand, twenty-two".