123320053531000 has 256 divisors, whose sum is σ = 302356128672000. Its totient is φ = 47016668160000.

The previous prime is 123320053530983. The next prime is 123320053531019. The reversal of 123320053531000 is 135350023321.

It is a super-2 number, since 2×123320053531000² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123320053531000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1628573140 + ... + 1628648860.

It is an arithmetic number, because the mean of its divisors is an integer number (1181078627625).

Almost surely, 2^{123320053531000} is an apocalyptic number.

123320053531000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123320053531000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151178064336000).

123320053531000 is an abundant number, since it is smaller than the sum of its proper divisors (179036075141000).

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

123320053531000 is a wasteful number, since it uses less digits than its factorization.

123320053531000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76491 (or 76477 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 28.

The spelling of 123320053531000 in words is "one hundred twenty-three trillion, three hundred twenty billion, fifty-three million, five hundred thirty-one thousand".