12005231451 has 8 divisors (see below), whose sum is σ = 16013953104. Its totient is φ = 7999998720.

The previous prime is 12005231401. The next prime is 12005231467. The reversal of 12005231451 is 15413250021.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-12005231451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12005231401) 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, 864190 + ... + 877971.

It is an arithmetic number, because the mean of its divisors is an integer number (2001744138).

Almost surely, 2^12005231451 is an apocalyptic number.

12005231451 is a deficient number, since it is larger than the sum of its proper divisors (4008721653).

12005231451 is a wasteful number, since it uses less digits than its factorization.

12005231451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744461.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 12005231451 its reverse (15413250021), we get a palindrome (27418481472).

The spelling of 12005231451 in words is "twelve billion, five million, two hundred thirty-one thousand, four hundred fifty-one".