123330100 has 18 divisors (see below), whose sum is σ = 267626534. Its totient is φ = 49332000.

The previous prime is 123330089. The next prime is 123330101. The reversal of 123330100 is 1033321.

It can be written as a sum of positive squares in 3 ways, for example, as 7595536 + 115734564 = 2756^2 + 10758^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123330101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616551 + ... + 616750.

Almost surely, 2^123330100 is an apocalyptic number.

123330100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123330100 is an abundant number, since it is smaller than the sum of its proper divisors (144296434).

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

123330100 is a wasteful number, since it uses less digits than its factorization.

123330100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233315 (or 1233308 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 123330100 is about 11105.4085922131. The cubic root of 123330100 is about 497.7634775172.

Adding to 123330100 its reverse (1033321), we get a palindrome (124363421).

The spelling of 123330100 in words is "one hundred twenty-three million, three hundred thirty thousand, one hundred".