1011444023 has 4 divisors (see below), whose sum is σ = 1012069608. Its totient is φ = 1010818440.

The previous prime is 1011444013. The next prime is 1011444041. The reversal of 1011444023 is 3204441101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3204441101 = 29 ⋅110497969.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011444023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011443986 and 1011444004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011444013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310361 + ... + 313602.

It is an arithmetic number, because the mean of its divisors is an integer number (253017402).

Almost surely, 2^1011444023 is an apocalyptic number.

1011444023 is a deficient number, since it is larger than the sum of its proper divisors (625585).

1011444023 is an equidigital number, since it uses as much as digits as its factorization.

1011444023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625584.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1011444023 is about 31803.2077470182. The cubic root of 1011444023 is about 1003.8002144100.

Adding to 1011444023 its reverse (3204441101), we get a palindrome (4215885124).

The spelling of 1011444023 in words is "one billion, eleven million, four hundred forty-four thousand, twenty-three".