1204311023 has 4 divisors (see below), whose sum is σ = 1204417968. Its totient is φ = 1204204080.

The previous prime is 1204311011. The next prime is 1204311041. The reversal of 1204311023 is 3201134021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1204311023 - 2²⁴ = 1187533807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1204310992 and 1204311010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204311323) 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, 34286 + ... + 59867.

It is an arithmetic number, because the mean of its divisors is an integer number (301104492).

Almost surely, 2^1204311023 is an apocalyptic number.

1204311023 is a deficient number, since it is larger than the sum of its proper divisors (106945).

1204311023 is an equidigital number, since it uses as much as digits as its factorization.

1204311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106944.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1204311023 is about 34703.1846233166. The cubic root of 1204311023 is about 1063.9295887673.

Adding to 1204311023 its reverse (3201134021), we get a palindrome (4405445044).

The spelling of 1204311023 in words is "one billion, two hundred four million, three hundred eleven thousand, twenty-three".