12144013531 has 8 divisors (see below), whose sum is σ = 13092537024. Its totient is φ = 11197542720.

The previous prime is 12144013513. The next prime is 12144013537. The reversal of 12144013531 is 13531044121.

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

It is not a de Polignac number, because 12144013531 - 2⁵ = 12144013499 is a prime.

It is a super-2 number, since 2×12144013531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12144013496 and 12144013505.

It is not an unprimeable number, because it can be changed into a prime (12144013537) 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, 500866 + ... + 524551.

It is an arithmetic number, because the mean of its divisors is an integer number (1636567128).

Almost surely, 2^12144013531 is an apocalyptic number.

12144013531 is a deficient number, since it is larger than the sum of its proper divisors (948523493).

12144013531 is a wasteful number, since it uses less digits than its factorization.

12144013531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026341.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 12144013531 its reverse (13531044121), we get a palindrome (25675057652).

The spelling of 12144013531 in words is "twelve billion, one hundred forty-four million, thirteen thousand, five hundred thirty-one".