1331013223 has 4 divisors (see below), whose sum is σ = 1350879160. Its totient is φ = 1311147288.

The previous prime is 1331013209. The next prime is 1331013239. The reversal of 1331013223 is 3223101331.

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 1331013223 - 2⁵ = 1331013191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331013223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331013293) 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, 9932868 + ... + 9933001.

It is an arithmetic number, because the mean of its divisors is an integer number (337719790).

Almost surely, 2^1331013223 is an apocalyptic number.

1331013223 is a deficient number, since it is larger than the sum of its proper divisors (19865937).

1331013223 is an equidigital number, since it uses as much as digits as its factorization.

1331013223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19865936.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1331013223 is about 36483.0539154825. The cubic root of 1331013223 is about 1100.0036426877.

Adding to 1331013223 its reverse (3223101331), we get a palindrome (4554114554).

The spelling of 1331013223 in words is "one billion, three hundred thirty-one million, thirteen thousand, two hundred twenty-three".