231332022 has 48 divisors (see below), whose sum is σ = 553793760. Its totient is φ = 69417216.

The previous prime is 231331993. The next prime is 231332027. The reversal of 231332022 is 220233132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 231331986 and 231332004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231332027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9397 + ... + 23472.

It is an arithmetic number, because the mean of its divisors is an integer number (11537370).

Almost surely, 2^231332022 is an apocalyptic number.

231332022 is an abundant number, since it is smaller than the sum of its proper divisors (322461738).

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

231332022 is a wasteful number, since it uses less digits than its factorization.

231332022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32917 (or 32914 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 231332022 is about 15209.6029533976. The cubic root of 231332022 is about 613.8730740972.

Adding to 231332022 its reverse (220233132), we get a palindrome (451565154).

The spelling of 231332022 in words is "two hundred thirty-one million, three hundred thirty-two thousand, twenty-two".