113102321 has 4 divisors (see below), whose sum is σ = 113136612. Its totient is φ = 113068032.

The previous prime is 113102287. The next prime is 113102323. The reversal of 113102321 is 123201311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123201311 = 1499 ⋅82189.

It can be written as a sum of positive squares in 2 ways, for example, as 39828721 + 73273600 = 6311^2 + 8560^2 .

It is a cyclic number.

It is not a de Polignac number, because 113102321 - 2¹⁰ = 113101297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113102296 and 113102305.

It is not an unprimeable number, because it can be changed into a prime (113102323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11600 + ... + 18993.

It is an arithmetic number, because the mean of its divisors is an integer number (28284153).

Almost surely, 2^113102321 is an apocalyptic number.

It is an amenable number.

113102321 is a deficient number, since it is larger than the sum of its proper divisors (34291).

113102321 is an equidigital number, since it uses as much as digits as its factorization.

113102321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34290.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 113102321 is about 10634.9574987397. The cubic root of 113102321 is about 483.6046919609.

Adding to 113102321 its reverse (123201311), we get a palindrome (236303632).

It can be divided in two parts, 11310 and 2321, that added together give a palindrome (13631).

The spelling of 113102321 in words is "one hundred thirteen million, one hundred two thousand, three hundred twenty-one".