12331761 has 16 divisors (see below), whose sum is σ = 17821440. Its totient is φ = 7584720.

The previous prime is 12331747. The next prime is 12331771. The reversal of 12331761 is 16713321.

It is not a de Polignac number, because 12331761 - 2¹³ = 12323569 is a prime.

It is a super-2 number, since 2×12331761² = 304144658722242, which contains 22 as substring.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5656 + ... + 7526.

It is an arithmetic number, because the mean of its divisors is an integer number (1113840).

Almost surely, 2^12331761 is an apocalyptic number.

It is an amenable number.

12331761 is a deficient number, since it is larger than the sum of its proper divisors (5489679).

12331761 is an equidigital number, since it uses as much as digits as its factorization.

12331761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913 (or 1887 counting only the distinct ones).

The product of its digits is 756, while the sum is 24.

The square root of 12331761 is about 3511.6607182357. The cubic root of 12331761 is about 231.0335402283.

The spelling of 12331761 in words is "twelve million, three hundred thirty-one thousand, seven hundred sixty-one".