1011323311 has 4 divisors (see below), whose sum is σ = 1015739800. Its totient is φ = 1006906824.

The previous prime is 1011323309. The next prime is 1011323359. The reversal of 1011323311 is 1133231101.

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 1011323311 - 2¹ = 1011323309 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 (1011323381) 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, 2207901 + ... + 2208358.

It is an arithmetic number, because the mean of its divisors is an integer number (253934950).

Almost surely, 2^1011323311 is an apocalyptic number.

1011323311 is a deficient number, since it is larger than the sum of its proper divisors (4416489).

1011323311 is an equidigital number, since it uses as much as digits as its factorization.

1011323311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416488.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1011323311 is about 31801.3098944053. The cubic root of 1011323311 is about 1003.7602795744.

Adding to 1011323311 its reverse (1133231101), we get a palindrome (2144554412).

The spelling of 1011323311 in words is "one billion, eleven million, three hundred twenty-three thousand, three hundred eleven".