1123231320100 has 54 divisors (see below), whose sum is σ = 2572448721234. Its totient is φ = 425645539200.

The previous prime is 1123231320091. The next prime is 1123231320103. The reversal of 1123231320100 is 10231323211.

It can be written as a sum of positive squares in 3 ways, for example, as 351096541156 + 772134778944 = 592534^2 + 878712^2 .

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (1123231320103) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15521121 + ... + 15593320.

Almost surely, 2^{1123231320100} is an apocalyptic number.

1123231320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123231320100 is an abundant number, since it is smaller than the sum of its proper divisors (1449217401134).

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

1123231320100 is a wasteful number, since it uses less digits than its factorization.

1123231320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31114493 (or 31114467 counting only the distinct ones).

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

Adding to 1123231320100 its reverse (10231323211), we get a palindrome (1133462643311).

The spelling of 1123231320100 in words is "one trillion, one hundred twenty-three billion, two hundred thirty-one million, three hundred twenty thousand, one hundred".