1301312111 has 16 divisors (see below), whose sum is σ = 1432263168. Its totient is φ = 1172508000.

The previous prime is 1301312081. The next prime is 1301312149. The reversal of 1301312111 is 1112131031.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301312111 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 (1301312011) 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, 1323326 + ... + 1324308.

It is an arithmetic number, because the mean of its divisors is an integer number (89516448).

Almost surely, 2^1301312111 is an apocalyptic number.

1301312111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1301312111 is a deficient number, since it is larger than the sum of its proper divisors (130951057).

1301312111 is a wasteful number, since it uses less digits than its factorization.

1301312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942.

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

The square root of 1301312111 is about 36073.7038713798. The cubic root of 1301312111 is about 1091.7599464168.

Adding to 1301312111 its reverse (1112131031), we get a palindrome (2413443142).

The spelling of 1301312111 in words is "one billion, three hundred one million, three hundred twelve thousand, one hundred eleven".