1013111223 has 4 divisors (see below), whose sum is σ = 1350814968. Its totient is φ = 675407480.

The previous prime is 1013111213. The next prime is 1013111227. The reversal of 1013111223 is 3221113101.

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 1013111223 - 2¹² = 1013107127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013111227) 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, 168851868 + ... + 168851873.

It is an arithmetic number, because the mean of its divisors is an integer number (337703742).

Almost surely, 2^1013111223 is an apocalyptic number.

1013111223 is a deficient number, since it is larger than the sum of its proper divisors (337703745).

1013111223 is an equidigital number, since it uses as much as digits as its factorization.

1013111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337703744.

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

The square root of 1013111223 is about 31829.4081471836. The cubic root of 1013111223 is about 1004.3514451270.

Adding to 1013111223 its reverse (3221113101), we get a palindrome (4234224324).

The spelling of 1013111223 in words is "one billion, thirteen million, one hundred eleven thousand, two hundred twenty-three".