123604311040 has 528 divisors, whose sum is σ = 372058527744. Its totient is φ = 39171686400.

The previous prime is 123604311037. The next prime is 123604311043. The reversal of 123604311040 is 40113406321.

It is an interprime number because it is at equal distance from previous prime (123604311037) and next prime (123604311043).

It is a junction number, because it is equal to n+sod(n) for n = 123604310996 and 123604311014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123604311043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 178877095 + ... + 178877785.

Almost surely, 2^123604311040 is an apocalyptic number.

123604311040 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 123604311040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186029263872).

123604311040 is an abundant number, since it is smaller than the sum of its proper divisors (248454216704).

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

123604311040 is a wasteful number, since it uses less digits than its factorization.

123604311040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123604311040 its reverse (40113406321), we get a palindrome (163717717361).

The spelling of 123604311040 in words is "one hundred twenty-three billion, six hundred four million, three hundred eleven thousand, forty".