1111002023 has 4 divisors (see below), whose sum is σ = 1111160160. Its totient is φ = 1110843888.

The previous prime is 1111001999. The next prime is 1111002049. The reversal of 1111002023 is 3202001111.

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 1111002023 - 2⁸ = 1111001767 is a prime.

It is a super-2 number, since 2×1111002023² = 2468650990220185058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111001995 and 1111002013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111002083) 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, 68015 + ... + 82752.

It is an arithmetic number, because the mean of its divisors is an integer number (277790040).

Almost surely, 2^1111002023 is an apocalyptic number.

1111002023 is a deficient number, since it is larger than the sum of its proper divisors (158137).

1111002023 is an equidigital number, since it uses as much as digits as its factorization.

1111002023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158136.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1111002023 is about 33331.6969715015. The cubic root of 1111002023 is about 1035.7102713294.

Adding to 1111002023 its reverse (3202001111), we get a palindrome (4313003134).

The spelling of 1111002023 in words is "one billion, one hundred eleven million, two thousand, twenty-three".