13331761 has 2 divisors, whose sum is σ = 13331762. Its totient is φ = 13331760.

The previous prime is 13331753. The next prime is 13331797. The reversal of 13331761 is 16713331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7667361 + 5664400 = 2769^2 + 2380^2 .

It is a cyclic number.

It is not a de Polignac number, because 13331761 - 2³ = 13331753 is a prime.

It is a super-2 number, since 2×13331761² = 355471702722242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13331701) 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 as a sum of consecutive naturals, namely, 6665880 + 6665881.

It is an arithmetic number, because the mean of its divisors is an integer number (6665881).

Almost surely, 2^13331761 is an apocalyptic number.

It is an amenable number.

13331761 is a deficient number, since it is larger than the sum of its proper divisors (1).

13331761 is an equidigital number, since it uses as much as digits as its factorization.

13331761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 25.

The square root of 13331761 is about 3651.2684097448. The cubic root of 13331761 is about 237.1168988964.

The spelling of 13331761 in words is "thirteen million, three hundred thirty-one thousand, seven hundred sixty-one".