123230100 has 216 divisors, whose sum is σ = 423910368. Its totient is φ = 27552000.

The previous prime is 123230089. The next prime is 123230111. The reversal of 123230100 is 1032321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123230089) and next prime (123230111).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1220050 + ... + 1220150.

It is an arithmetic number, because the mean of its divisors is an integer number (1962548).

Almost surely, 2^123230100 is an apocalyptic number.

123230100 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 123230100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211955184).

123230100 is an abundant number, since it is smaller than the sum of its proper divisors (300680268).

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

123230100 is a wasteful number, since it uses less digits than its factorization.

123230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 123230100 is about 11100.9053684823. The cubic root of 123230100 is about 497.6289069427.

Adding to 123230100 its reverse (1032321), we get a palindrome (124262421).

The spelling of 123230100 in words is "one hundred twenty-three million, two hundred thirty thousand, one hundred".