1320213111 has 8 divisors (see below), whose sum is σ = 2011753344. Its totient is φ = 754407480.

The previous prime is 1320213101. The next prime is 1320213211. The reversal of 1320213111 is 1113120231.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1320213111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320213101) 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, 31433625 + ... + 31433666.

It is an arithmetic number, because the mean of its divisors is an integer number (251469168).

Almost surely, 2^1320213111 is an apocalyptic number.

1320213111 is a deficient number, since it is larger than the sum of its proper divisors (691540233).

1320213111 is an equidigital number, since it uses as much as digits as its factorization.

1320213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62867301.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1320213111 is about 36334.7369744161. The cubic root of 1320213111 is about 1097.0203412800.

Adding to 1320213111 its reverse (1113120231), we get a palindrome (2433333342).

The spelling of 1320213111 in words is "one billion, three hundred twenty million, two hundred thirteen thousand, one hundred eleven".