12023047731 has 4 divisors (see below), whose sum is σ = 16030730312. Its totient is φ = 8015365152.

The previous prime is 12023047711. The next prime is 12023047733. The reversal of 12023047731 is 13774032021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12023047731 - 2²³ = 12014659123 is a prime.

It is a super-2 number, since 2×12023047731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12023047733) 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, 2003841286 + ... + 2003841291.

It is an arithmetic number, because the mean of its divisors is an integer number (4007682578).

Almost surely, 2^12023047731 is an apocalyptic number.

12023047731 is a deficient number, since it is larger than the sum of its proper divisors (4007682581).

12023047731 is an equidigital number, since it uses as much as digits as its factorization.

12023047731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007682580.

The product of its (nonzero) digits is 7056, while the sum is 30.

Adding to 12023047731 its reverse (13774032021), we get a palindrome (25797079752).

The spelling of 12023047731 in words is "twelve billion, twenty-three million, forty-seven thousand, seven hundred thirty-one".