13201961 has 4 divisors (see below), whose sum is σ = 13233024. Its totient is φ = 13170900.

The previous prime is 13201957. The next prime is 13201963. The reversal of 13201961 is 16910231.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 13201961 - 2² = 13201957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13201963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14885 + ... + 15746.

It is an arithmetic number, because the mean of its divisors is an integer number (3308256).

Almost surely, 2^13201961 is an apocalyptic number.

It is an amenable number.

13201961 is a deficient number, since it is larger than the sum of its proper divisors (31063).

13201961 is an equidigital number, since it uses as much as digits as its factorization.

13201961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31062.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 13201961 is about 3633.4502886375. The cubic root of 13201961 is about 236.3448527793.

The spelling of 13201961 in words is "thirteen million, two hundred one thousand, nine hundred sixty-one".