12243020531 has 8 divisors (see below), whose sum is σ = 14127869184. Its totient is φ = 10392133320.

The previous prime is 12243020507. The next prime is 12243020551. The reversal of 12243020531 is 13502034221.

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

It is a cyclic number.

It is not a de Polignac number, because 12243020531 - 2¹⁰ = 12243019507 is a prime.

It is a super-2 number, since 2×12243020531² (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 = 12243020497 and 12243020506.

It is not an unprimeable number, because it can be changed into a prime (12243020551) 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, 8489585 + ... + 8491026.

It is an arithmetic number, because the mean of its divisors is an integer number (1765983648).

Almost surely, 2^12243020531 is an apocalyptic number.

12243020531 is a deficient number, since it is larger than the sum of its proper divisors (1884848653).

12243020531 is a wasteful number, since it uses less digits than its factorization.

12243020531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980721.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 12243020531 its reverse (13502034221), we get a palindrome (25745054752).

The spelling of 12243020531 in words is "twelve billion, two hundred forty-three million, twenty thousand, five hundred thirty-one".