1011312111 has 8 divisors (see below), whose sum is σ = 1348743600. Its totient is φ = 674044352.

The previous prime is 1011312079. The next prime is 1011312119. The reversal of 1011312111 is 1112131101.

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 1011312111 - 2⁵ = 1011312079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011312119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25710 + ... + 51803.

It is an arithmetic number, because the mean of its divisors is an integer number (168592950).

Almost surely, 2^1011312111 is an apocalyptic number.

1011312111 is a deficient number, since it is larger than the sum of its proper divisors (337431489).

1011312111 is an equidigital number, since it uses as much as digits as its factorization.

1011312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81865.

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 1011312111 is about 31801.1338005424. The cubic root of 1011312111 is about 1003.7565741466.

Adding to 1011312111 its reverse (1112131101), we get a palindrome (2123443212).

The spelling of 1011312111 in words is "one billion, eleven million, three hundred twelve thousand, one hundred eleven".