123430433100 has 288 divisors, whose sum is σ = 388381808640. Its totient is φ = 30085724160.

The previous prime is 123430433089. The next prime is 123430433107. The reversal of 123430433100 is 1334034321.

It is a super-2 number, since 2×123430433100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123430433107) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 301785696 + ... + 301786104.

Almost surely, 2^123430433100 is an apocalyptic number.

123430433100 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 123430433100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194190904320).

123430433100 is an abundant number, since it is smaller than the sum of its proper divisors (264951375540).

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

123430433100 is a wasteful number, since it uses less digits than its factorization.

123430433100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 123430433100 its reverse (1334034321), we get a palindrome (124764467421).

The spelling of 123430433100 in words is "one hundred twenty-three billion, four hundred thirty million, four hundred thirty-three thousand, one hundred".