12013331 has 8 divisors (see below), whose sum is σ = 13131264. Its totient is φ = 10899720.

The previous prime is 12013321. The next prime is 12013333. The reversal of 12013331 is 13331021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12013331 is a prime.

It is a super-2 number, since 2×12013331² = 288640243431122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013333) 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, 8390 + ... + 9716.

It is an arithmetic number, because the mean of its divisors is an integer number (1641408).

Almost surely, 2^12013331 is an apocalyptic number.

12013331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12013331 is a deficient number, since it is larger than the sum of its proper divisors (1117933).

12013331 is a wasteful number, since it uses less digits than its factorization.

12013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 12013331 is about 3466.0252451475. The cubic root of 12013331 is about 229.0275959447.

Adding to 12013331 its reverse (13331021), we get a palindrome (25344352).

The spelling of 12013331 in words is "twelve million, thirteen thousand, three hundred thirty-one".