11723961 has 4 divisors (see below), whose sum is σ = 15631952. Its totient is φ = 7815972.

The previous prime is 11723953. The next prime is 11723977. The reversal of 11723961 is 16932711.

11723961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11723961 - 2³ = 11723953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11723911) 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 3 ways as a sum of consecutive naturals, for example, 1953991 + ... + 1953996.

It is an arithmetic number, because the mean of its divisors is an integer number (3907988).

Almost surely, 2^11723961 is an apocalyptic number.

It is an amenable number.

11723961 is a deficient number, since it is larger than the sum of its proper divisors (3907991).

11723961 is an equidigital number, since it uses as much as digits as its factorization.

11723961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907990.

The product of its digits is 2268, while the sum is 30.

The square root of 11723961 is about 3424.0270150803. The cubic root of 11723961 is about 227.1737367252.

The spelling of 11723961 in words is "eleven million, seven hundred twenty-three thousand, nine hundred sixty-one".