123404302320 has 160 divisors (see below), whose sum is σ = 433663910400. Its totient is φ = 28777669632.

The previous prime is 123404302313. The next prime is 123404302321. The reversal of 123404302320 is 23203404321.

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 (123404302321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 981580 + ... + 1100139.

It is an arithmetic number, because the mean of its divisors is an integer number (2710399440).

Almost surely, 2^123404302320 is an apocalyptic number.

123404302320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123404302320 is an abundant number, since it is smaller than the sum of its proper divisors (310259608080).

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

123404302320 is a wasteful number, since it uses less digits than its factorization.

123404302320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081767 (or 2081761 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 123404302320 its reverse (23203404321), we get a palindrome (146607706641).

The spelling of 123404302320 in words is "one hundred twenty-three billion, four hundred four million, three hundred two thousand, three hundred twenty".