231202232220 has 48 divisors (see below), whose sum is σ = 649827763200. Its totient is φ = 61419498816.

The previous prime is 231202232197. The next prime is 231202232221. The reversal of 231202232220 is 22232202132.

It is a super-2 number, since 2×231202232220² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231202232221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7310020 + ... + 7341579.

It is an arithmetic number, because the mean of its divisors is an integer number (13538078400).

Almost surely, 2^231202232220 is an apocalyptic number.

231202232220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231202232220 is an abundant number, since it is smaller than the sum of its proper divisors (418625530980).

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

231202232220 is a wasteful number, since it uses less digits than its factorization.

231202232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14651874 (or 14651872 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 231202232220 its reverse (22232202132), we get a palindrome (253434434352).

The spelling of 231202232220 in words is "two hundred thirty-one billion, two hundred two million, two hundred thirty-two thousand, two hundred twenty".