123223040322320 has 20 divisors (see below), whose sum is σ = 286493568749580. Its totient is φ = 49289216128896.

The previous prime is 123223040322313. The next prime is 123223040322337. The reversal of 123223040322320 is 23223040322321.

It can be written as a sum of positive squares in 2 ways, for example, as 91929667296016 + 31293373026304 = 9587996^2 + 5594048^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×123223040322320² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770144001935 + ... + 770144002094.

It is an arithmetic number, because the mean of its divisors is an integer number (14324678437479).

Almost surely, 2^{123223040322320} is an apocalyptic number.

123223040322320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123223040322320 is an abundant number, since it is smaller than the sum of its proper divisors (163270528427260).

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

123223040322320 is a wasteful number, since it uses less digits than its factorization.

123223040322320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540288004042 (or 1540288004036 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 123223040322320 its reverse (23223040322321), we get a palindrome (146446080644641).

Subtracting from 123223040322320 its reverse (23223040322321), we obtain a palindrome (99999999999999).

The spelling of 123223040322320 in words is "one hundred twenty-three trillion, two hundred twenty-three billion, forty million, three hundred twenty-two thousand, three hundred twenty".