123200003100 has 72 divisors (see below), whose sum is σ = 357718493440. Its totient is φ = 32737222080.

The previous prime is 123200003089. The next prime is 123200003137. The reversal of 123200003100 is 1300002321.

It is a happy number.

It is a super-2 number, since 2×123200003100² (a number of 23 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 640660 + ... + 810459.

Almost surely, 2^123200003100 is an apocalyptic number.

123200003100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123200003100 is an abundant number, since it is smaller than the sum of its proper divisors (234518490340).

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

123200003100 is a wasteful number, since it uses less digits than its factorization.

123200003100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451419 (or 1451412 counting only the distinct ones).

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

Adding to 123200003100 its reverse (1300002321), we get a palindrome (124500005421).

The spelling of 123200003100 in words is "one hundred twenty-three billion, two hundred million, three thousand, one hundred".