123311211300 has 144 divisors (see below), whose sum is σ = 396670792000. Its totient is φ = 32862412800.

The previous prime is 123311211293. The next prime is 123311211379. The reversal of 123311211300 is 3112113321.

123311211300 is a `hidden beast` number, since 12 + 331 + 1 + 21 + 1 + 300 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4573860 + ... + 4600740.

Almost surely, 2^123311211300 is an apocalyptic number.

123311211300 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 123311211300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198335396000).

123311211300 is an abundant number, since it is smaller than the sum of its proper divisors (273359580700).

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

123311211300 is a wasteful number, since it uses less digits than its factorization.

123311211300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28603 (or 28590 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123311211300 its reverse (3112113321), we get a palindrome (126423324621).

The spelling of 123311211300 in words is "one hundred twenty-three billion, three hundred eleven million, two hundred eleven thousand, three hundred".