1320131111 has 8 divisors (see below), whose sum is σ = 1425903024. Its totient is φ = 1214962560.

The previous prime is 1320131027. The next prime is 1320131119. The reversal of 1320131111 is 1111310231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1320131111 - 2²² = 1315936807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320131119) 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, 146285 + ... + 155046.

It is an arithmetic number, because the mean of its divisors is an integer number (178237878).

Almost surely, 2^1320131111 is an apocalyptic number.

1320131111 is a deficient number, since it is larger than the sum of its proper divisors (105771913).

1320131111 is a wasteful number, since it uses less digits than its factorization.

1320131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301681.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1320131111 is about 36333.6085601197. The cubic root of 1320131111 is about 1096.9976283988.

Adding to 1320131111 its reverse (1111310231), we get a palindrome (2431441342).

The spelling of 1320131111 in words is "one billion, three hundred twenty million, one hundred thirty-one thousand, one hundred eleven".