11963261 has 2 divisors, whose sum is σ = 11963262. Its totient is φ = 11963260.

The previous prime is 11963249. The next prime is 11963269. The reversal of 11963261 is 16236911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10686361 + 1276900 = 3269^2 + 1130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11963261 is a prime.

It is a super-2 number, since 2×11963261² = 286239227508242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11963269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5981630 + 5981631.

It is an arithmetic number, because the mean of its divisors is an integer number (5981631).

Almost surely, 2^11963261 is an apocalyptic number.

It is an amenable number.

11963261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11963261 is an equidigital number, since it uses as much as digits as its factorization.

11963261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 11963261 is about 3458.7947322731. The cubic root of 11963261 is about 228.7089671292.

The spelling of 11963261 in words is "eleven million, nine hundred sixty-three thousand, two hundred sixty-one".