123312311200 has 72 divisors (see below), whose sum is σ = 324192836268. Its totient is φ = 45530695680.

The previous prime is 123312311189. The next prime is 123312311233. The reversal of 123312311200 is 2113213321.

It can be written as a sum of positive squares in 6 ways, for example, as 66632129424 + 56680181776 = 258132^2 + 238076^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5918077 + ... + 5938876.

Almost surely, 2^123312311200 is an apocalyptic number.

123312311200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123312311200 is an abundant number, since it is smaller than the sum of its proper divisors (200880525068).

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

123312311200 is a wasteful number, since it uses less digits than its factorization.

123312311200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11856986 (or 11856973 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123312311200 its reverse (2113213321), we get a palindrome (125425524521).

The spelling of 123312311200 in words is "one hundred twenty-three billion, three hundred twelve million, three hundred eleven thousand, two hundred".