1323020111 has 16 divisors (see below), whose sum is σ = 1524096000. Its totient is φ = 1125001248.

The previous prime is 1323020093. The next prime is 1323020113. The reversal of 1323020111 is 1110203231.

It is not a de Polignac number, because 1323020111 - 2⁶ = 1323020047 is a prime.

It is a super-2 number, since 2×1323020111² = 3500764428220904642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323020113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488840 + ... + 491538.

It is an arithmetic number, because the mean of its divisors is an integer number (95256000).

Almost surely, 2^1323020111 is an apocalyptic number.

1323020111 is a deficient number, since it is larger than the sum of its proper divisors (201075889).

1323020111 is a wasteful number, since it uses less digits than its factorization.

1323020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1323020111 is about 36373.3434124497. The cubic root of 1323020111 is about 1097.7972755106.

Adding to 1323020111 its reverse (1110203231), we get a palindrome (2433223342).

The spelling of 1323020111 in words is "one billion, three hundred twenty-three million, twenty thousand, one hundred eleven".