12013202331 has 24 divisors (see below), whose sum is σ = 18812648400. Its totient is φ = 7343113536.

The previous prime is 12013202329. The next prime is 12013202347. The reversal of 12013202331 is 13320231021.

12013202331 is a `hidden beast` number, since 12 + 0 + 1 + 320 + 2 + 331 = 666.

It is not a de Polignac number, because 12013202331 - 2¹ = 12013202329 is a prime.

It is a super-2 number, since 2×12013202331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12013202321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327121 + ... + 361986.

It is an arithmetic number, because the mean of its divisors is an integer number (783860350).

Almost surely, 2^12013202331 is an apocalyptic number.

12013202331 is a deficient number, since it is larger than the sum of its proper divisors (6799446069).

12013202331 is a wasteful number, since it uses less digits than its factorization.

12013202331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689275 (or 689272 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12013202331 its reverse (13320231021), we get a palindrome (25333433352).

The spelling of 12013202331 in words is "twelve billion, thirteen million, two hundred two thousand, three hundred thirty-one".