1320230111 has 4 divisors (see below), whose sum is σ = 1320356712. Its totient is φ = 1320103512.

The previous prime is 1320230089. The next prime is 1320230123. The reversal of 1320230111 is 1110320231.

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 1320230111 - 2¹⁸ = 1319967967 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 (1320230011) 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, 46100 + ... + 69033.

It is an arithmetic number, because the mean of its divisors is an integer number (330089178).

Almost surely, 2^1320230111 is an apocalyptic number.

1320230111 is a deficient number, since it is larger than the sum of its proper divisors (126601).

1320230111 is a wasteful number, since it uses less digits than its factorization.

1320230111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126600.

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

The square root of 1320230111 is about 36334.9709095797. The cubic root of 1320230111 is about 1097.0250499303.

Adding to 1320230111 its reverse (1110320231), we get a palindrome (2430550342).

The spelling of 1320230111 in words is "one billion, three hundred twenty million, two hundred thirty thousand, one hundred eleven".