123233210520 has 96 divisors (see below), whose sum is σ = 430058775600. Its totient is φ = 28167589632.

The previous prime is 123233210473. The next prime is 123233210521. The reversal of 123233210520 is 25012332321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123233210521) 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, 10473135 + ... + 10484894.

Almost surely, 2^123233210520 is an apocalyptic number.

123233210520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123233210520 is an abundant number, since it is smaller than the sum of its proper divisors (306825565080).

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

123233210520 is a wasteful number, since it uses less digits than its factorization.

123233210520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20958057 (or 20958046 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 123233210520 its reverse (25012332321), we get a palindrome (148245542841).

The spelling of 123233210520 in words is "one hundred twenty-three billion, two hundred thirty-three million, two hundred ten thousand, five hundred twenty".