1311022223 has 8 divisors (see below), whose sum is σ = 1500610848. Its totient is φ = 1122008544.

The previous prime is 1311022217. The next prime is 1311022247. The reversal of 1311022223 is 3222201131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311022223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311022253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138836 + ... + 147977.

It is an arithmetic number, because the mean of its divisors is an integer number (187576356).

Almost surely, 2^1311022223 is an apocalyptic number.

1311022223 is a deficient number, since it is larger than the sum of its proper divisors (189588625).

1311022223 is an equidigital number, since it uses as much as digits as its factorization.

1311022223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287473.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1311022223 is about 36208.0408611126. The cubic root of 1311022223 is about 1094.4687130256.

Adding to 1311022223 its reverse (3222201131), we get a palindrome (4533223354).

The spelling of 1311022223 in words is "one billion, three hundred eleven million, twenty-two thousand, two hundred twenty-three".