123012333400 has 96 divisors (see below), whose sum is σ = 322762935600. Its totient is φ = 43189260800.

The previous prime is 123012333359. The next prime is 123012333401. The reversal of 123012333400 is 4333210321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012333401) 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 23 ways as a sum of consecutive naturals, for example, 900247 + ... + 1027846.

Almost surely, 2^123012333400 is an apocalyptic number.

123012333400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123012333400 is an abundant number, since it is smaller than the sum of its proper divisors (199750602200).

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

123012333400 is a wasteful number, since it uses less digits than its factorization.

123012333400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928149 (or 1928140 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 123012333400 its reverse (4333210321), we get a palindrome (127345543721).

The spelling of 123012333400 in words is "one hundred twenty-three billion, twelve million, three hundred thirty-three thousand, four hundred".