1012311011 has 4 divisors (see below), whose sum is σ = 1018521672. Its totient is φ = 1006100352.

The previous prime is 1012310989. The next prime is 1012311023. The reversal of 1012311011 is 1101132101.

It is a happy number.

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 1012311011 - 2²⁶ = 945202147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012310983 and 1012311001.

It is not an unprimeable number, because it can be changed into a prime (1012311511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3105086 + ... + 3105411.

It is an arithmetic number, because the mean of its divisors is an integer number (254630418).

Almost surely, 2^1012311011 is an apocalyptic number.

1012311011 is a deficient number, since it is larger than the sum of its proper divisors (6210661).

1012311011 is an equidigital number, since it uses as much as digits as its factorization.

1012311011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6210660.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1012311011 is about 31816.8353391722. The cubic root of 1012311011 is about 1004.0869444634.

Adding to 1012311011 its reverse (1101132101), we get a palindrome (2113443112).

The spelling of 1012311011 in words is "one billion, twelve million, three hundred eleven thousand, eleven".