231122123320020 has 48 divisors (see below), whose sum is σ = 647147726933568. Its totient is φ = 61632015586560.

The previous prime is 231122123319937. The next prime is 231122123320027. The reversal of 231122123320020 is 20023321221132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231122123320027) 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, 10413286 + ... + 23888925.

It is an arithmetic number, because the mean of its divisors is an integer number (13482244311116).

Almost surely, 2^{231122123320020} is an apocalyptic number.

231122123320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231122123320020 is an abundant number, since it is smaller than the sum of its proper divisors (416025603613548).

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

231122123320020 is a wasteful number, since it uses less digits than its factorization.

231122123320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34414520 (or 34414518 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 231122123320020 its reverse (20023321221132), we get a palindrome (251145444541152).

The spelling of 231122123320020 in words is "two hundred thirty-one trillion, one hundred twenty-two billion, one hundred twenty-three million, three hundred twenty thousand, twenty".