1011440023 has 16 divisors (see below), whose sum is σ = 1130887296. Its totient is φ = 896646240.

The previous prime is 1011440011. The next prime is 1011440063. The reversal of 1011440023 is 3200441101.

It is a cyclic number.

It is not a de Polignac number, because 1011440023 - 2¹⁷ = 1011308951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011439979 and 1011440006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011440063) 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, 375640 + ... + 378322.

It is an arithmetic number, because the mean of its divisors is an integer number (70680456).

Almost surely, 2^1011440023 is an apocalyptic number.

1011440023 is a deficient number, since it is larger than the sum of its proper divisors (119447273).

1011440023 is a wasteful number, since it uses less digits than its factorization.

1011440023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1011440023 is about 31803.1448602178. The cubic root of 1011440023 is about 1003.7988911514.

Adding to 1011440023 its reverse (3200441101), we get a palindrome (4211881124).

The spelling of 1011440023 in words is "one billion, eleven million, four hundred forty thousand, twenty-three".