113203011321 has 10 divisors (see below), whose sum is σ = 169105733082. Its totient is φ = 75468674160.

The previous prime is 113203011289. The next prime is 113203011343. The reversal of 113203011321 is 123110302311.

113203011321 is a `hidden beast` number, since 11 + 32 + 0 + 301 + 1 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 102823476921 + 10379534400 = 320661^2 + 101880^2 .

It is not a de Polignac number, because 113203011321 - 2⁵ = 113203011289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113203011294 and 113203011303.

It is not an unprimeable number, because it can be changed into a prime (113203011371) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 698783940 + ... + 698784101.

Almost surely, 2^113203011321 is an apocalyptic number.

It is an amenable number.

113203011321 is a deficient number, since it is larger than the sum of its proper divisors (55902721761).

113203011321 is an equidigital number, since it uses as much as digits as its factorization.

113203011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397568053 (or 1397568044 counting only the distinct ones).

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

Adding to 113203011321 its reverse (123110302311), we get a palindrome (236313313632).

The spelling of 113203011321 in words is "one hundred thirteen billion, two hundred three million, eleven thousand, three hundred twenty-one".