1123243101 has 12 divisors (see below), whose sum is σ = 1640693340. Its totient is φ = 740414400.

The previous prime is 1123243073. The next prime is 1123243117. The reversal of 1123243101 is 1013423211.

1123243101 is a `hidden beast` number, since 1 + 1 + 232 + 431 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 668274201 + 454968900 = 25851^2 + 21330^2 .

It is not a de Polignac number, because 1123243101 - 2¹³ = 1123234909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123243171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 700350 + ... + 701951.

It is an arithmetic number, because the mean of its divisors is an integer number (136724445).

Almost surely, 2^1123243101 is an apocalyptic number.

It is an amenable number.

1123243101 is a deficient number, since it is larger than the sum of its proper divisors (517450239).

1123243101 is a wasteful number, since it uses less digits than its factorization.

1123243101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402396 (or 1402393 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1123243101 is about 33514.8191252765. The cubic root of 1123243101 is about 1039.5002224540.

Adding to 1123243101 its reverse (1013423211), we get a palindrome (2136666312).

The spelling of 1123243101 in words is "one billion, one hundred twenty-three million, two hundred forty-three thousand, one hundred one".