123021131320 has 32 divisors (see below), whose sum is σ = 288832223520. Its totient is φ = 47068954240.

The previous prime is 123021131309. The next prime is 123021131341. The reversal of 123021131320 is 23131120321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66858391 + ... + 66860230.

It is an arithmetic number, because the mean of its divisors is an integer number (9026006985).

Almost surely, 2^123021131320 is an apocalyptic number.

123021131320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123021131320 is an abundant number, since it is smaller than the sum of its proper divisors (165811092200).

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

123021131320 is a wasteful number, since it uses less digits than its factorization.

123021131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133718655 (or 133718651 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123021131320 its reverse (23131120321), we get a palindrome (146152251641).

The spelling of 123021131320 in words is "one hundred twenty-three billion, twenty-one million, one hundred thirty-one thousand, three hundred twenty".