123031203100 has 72 divisors (see below), whose sum is σ = 290306176160. Its totient is φ = 44985818880.

The previous prime is 123031203077. The next prime is 123031203121. The reversal of 123031203100 is 1302130321.

It is a super-2 number, since 2×123031203100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 325515 + ... + 593314.

Almost surely, 2^123031203100 is an apocalyptic number.

123031203100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123031203100 is an abundant number, since it is smaller than the sum of its proper divisors (167274973060).

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

123031203100 is a wasteful number, since it uses less digits than its factorization.

123031203100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918959 (or 918952 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 123031203100 its reverse (1302130321), we get a palindrome (124333333421).

The spelling of 123031203100 in words is "one hundred twenty-three billion, thirty-one million, two hundred three thousand, one hundred".