12611331 has 24 divisors (see below), whose sum is σ = 19459440. Its totient is φ = 7842816.

The previous prime is 12611303. The next prime is 12611351. The reversal of 12611331 is 13311621.

It is not a de Polignac number, because 12611331 - 2⁵ = 12611299 is a prime.

It is a super-2 number, since 2×12611331² = 318091339183122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12611351) 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, 20971 + ... + 21563.

It is an arithmetic number, because the mean of its divisors is an integer number (810810).

Almost surely, 2^12611331 is an apocalyptic number.

12611331 is a deficient number, since it is larger than the sum of its proper divisors (6848109).

12611331 is a wasteful number, since it uses less digits than its factorization.

12611331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 752 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 12611331 is about 3551.2435849995. The cubic root of 12611331 is about 232.7664098452.

Adding to 12611331 its reverse (13311621), we get a palindrome (25922952).

The spelling of 12611331 in words is "twelve million, six hundred eleven thousand, three hundred thirty-one".