1111321023 has 8 divisors (see below), whose sum is σ = 1483711536. Its totient is φ = 739905600.

The previous prime is 1111321019. The next prime is 1111321051. The reversal of 1111321023 is 3201231111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111321023 - 2² = 1111321019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111320993 and 1111321011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111321423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241108 + ... + 245673.

It is an arithmetic number, because the mean of its divisors is an integer number (185463942).

Almost surely, 2^1111321023 is an apocalyptic number.

1111321023 is a deficient number, since it is larger than the sum of its proper divisors (372390513).

1111321023 is an equidigital number, since it uses as much as digits as its factorization.

1111321023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487545.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1111321023 is about 33336.4818629681. The cubic root of 1111321023 is about 1035.8093890488.

Adding to 1111321023 its reverse (3201231111), we get a palindrome (4312552134).

The spelling of 1111321023 in words is "one billion, one hundred eleven million, three hundred twenty-one thousand, twenty-three".