12013231563 has 12 divisors (see below), whose sum is σ = 17363539648. Its totient is φ = 8003700720.

The previous prime is 12013231553. The next prime is 12013231613. The reversal of 12013231563 is 36513231021.

It is not a de Polignac number, because 12013231563 - 2¹⁰ = 12013230539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013231523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411808 + ... + 440013.

Almost surely, 2^12013231563 is an apocalyptic number.

12013231563 is a deficient number, since it is larger than the sum of its proper divisors (5350308085).

12013231563 is a wasteful number, since it uses less digits than its factorization.

12013231563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853394 (or 853391 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 12013231563 its reverse (36513231021), we get a palindrome (48526462584).

The spelling of 12013231563 in words is "twelve billion, thirteen million, two hundred thirty-one thousand, five hundred sixty-three".