231050123220 has 48 divisors (see below), whose sum is σ = 739360395648. Its totient is φ = 52811456640.

The previous prime is 231050123141. The next prime is 231050123233. The reversal of 231050123220 is 22321050132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275059251 + ... + 275060090.

It is an arithmetic number, because the mean of its divisors is an integer number (15403341576).

Almost surely, 2^231050123220 is an apocalyptic number.

231050123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231050123220 is an abundant number, since it is smaller than the sum of its proper divisors (508310272428).

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

231050123220 is a wasteful number, since it uses less digits than its factorization.

231050123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550119360 (or 550119358 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 231050123220 its reverse (22321050132), we get a palindrome (253371173352).

The spelling of 231050123220 in words is "two hundred thirty-one billion, fifty million, one hundred twenty-three thousand, two hundred twenty".