1311223022 has 32 divisors (see below), whose sum is σ = 2203822080. Its totient is φ = 581454720.

The previous prime is 1311223013. The next prime is 1311223033. The reversal of 1311223022 is 2203221131.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118073 + ... + 128699.

It is an arithmetic number, because the mean of its divisors is an integer number (68869440).

Almost surely, 2^1311223022 is an apocalyptic number.

1311223022 is a deficient number, since it is larger than the sum of its proper divisors (892599058).

1311223022 is a wasteful number, since it uses less digits than its factorization.

1311223022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10856.

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

The square root of 1311223022 is about 36210.8136058830. The cubic root of 1311223022 is about 1094.5245872384.

Adding to 1311223022 its reverse (2203221131), we get a palindrome (3514444153).

The spelling of 1311223022 in words is "one billion, three hundred eleven million, two hundred twenty-three thousand, twenty-two".