12023481 has 4 divisors (see below), whose sum is σ = 16031312. Its totient is φ = 8015652.

The previous prime is 12023477. The next prime is 12023489. The reversal of 12023481 is 18432021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18432021 = 3 ⋅6144007.

It is not a de Polignac number, because 12023481 - 2² = 12023477 is a prime.

It is a super-2 number, since 2×12023481² = 289128190714722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12023489) 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, 2003911 + ... + 2003916.

It is an arithmetic number, because the mean of its divisors is an integer number (4007828).

Almost surely, 2^12023481 is an apocalyptic number.

It is an amenable number.

12023481 is a deficient number, since it is larger than the sum of its proper divisors (4007831).

12023481 is an equidigital number, since it uses as much as digits as its factorization.

12023481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007830.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 12023481 is about 3467.4891492260. The cubic root of 12023481 is about 229.0920791902.

The spelling of 12023481 in words is "twelve million, twenty-three thousand, four hundred eighty-one".