11203961 has 2 divisors, whose sum is σ = 11203962. Its totient is φ = 11203960.

The previous prime is 11203949. The next prime is 11203963. The reversal of 11203961 is 16930211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7123561 + 4080400 = 2669^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 11203961 - 2¹⁰ = 11202937 is a prime.

Together with 11203963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11203963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601980 + 5601981.

It is an arithmetic number, because the mean of its divisors is an integer number (5601981).

Almost surely, 2^11203961 is an apocalyptic number.

It is an amenable number.

11203961 is a deficient number, since it is larger than the sum of its proper divisors (1).

11203961 is an equidigital number, since it uses as much as digits as its factorization.

11203961 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11203961 is about 3347.2318413877. The cubic root of 11203961 is about 223.7641610629.

The spelling of 11203961 in words is "eleven million, two hundred three thousand, nine hundred sixty-one".