113213120123 has 4 divisors (see below), whose sum is σ = 116865156288. Its totient is φ = 109561083960.

The previous prime is 113213120071. The next prime is 113213120191. The reversal of 113213120123 is 321021312311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113213120123 - 2¹⁶ = 113213054587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113213120095 and 113213120104.

It is not an unprimeable number, because it can be changed into a prime (113213150123) 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, 1826018036 + ... + 1826018097.

It is an arithmetic number, because the mean of its divisors is an integer number (29216289072).

Almost surely, 2^113213120123 is an apocalyptic number.

113213120123 is a deficient number, since it is larger than the sum of its proper divisors (3652036165).

113213120123 is an equidigital number, since it uses as much as digits as its factorization.

113213120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652036164.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 113213120123 its reverse (321021312311), we get a palindrome (434234432434).

The spelling of 113213120123 in words is "one hundred thirteen billion, two hundred thirteen million, one hundred twenty thousand, one hundred twenty-three".