113211321 has 4 divisors (see below), whose sum is σ = 150948432. Its totient is φ = 75474212.

The previous prime is 113211289. The next prime is 113211323. The reversal of 113211321 is 123112311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113211321 - 2⁵ = 113211289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113211321.

It is not an unprimeable number, because it can be changed into a prime (113211323) 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, 18868551 + ... + 18868556.

It is an arithmetic number, because the mean of its divisors is an integer number (37737108).

Almost surely, 2^113211321 is an apocalyptic number.

It is an amenable number.

113211321 is a deficient number, since it is larger than the sum of its proper divisors (37737111).

113211321 is an equidigital number, since it uses as much as digits as its factorization.

113211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37737110.

The product of its digits is 36, while the sum is 15.

The square root of 113211321 is about 10640.0808737528. The cubic root of 113211321 is about 483.7599967220.

Adding to 113211321 its reverse (123112311), we get a palindrome (236323632).

The spelling of 113211321 in words is "one hundred thirteen million, two hundred eleven thousand, three hundred twenty-one".