1011523311 has 12 divisors (see below), whose sum is σ = 1537988920. Its totient is φ = 638856720.

The previous prime is 1011523301. The next prime is 1011523319. The reversal of 1011523311 is 1133251101.

It is not a de Polignac number, because 1011523311 - 2¹⁴ = 1011506927 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 (1011523319) 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 11 ways as a sum of consecutive naturals, for example, 2957500 + ... + 2957841.

Almost surely, 2^1011523311 is an apocalyptic number.

1011523311 is a deficient number, since it is larger than the sum of its proper divisors (526465609).

1011523311 is a wasteful number, since it uses less digits than its factorization.

1011523311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915366 (or 5915363 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1011523311 is about 31804.4542635147. The cubic root of 1011523311 is about 1003.8264433230.

Adding to 1011523311 its reverse (1133251101), we get a palindrome (2144774412).

The spelling of 1011523311 in words is "one billion, eleven million, five hundred twenty-three thousand, three hundred eleven".