11143901 has 2 divisors, whose sum is σ = 11143902. Its totient is φ = 11143900.

The previous prime is 11143897. The next prime is 11143903. The reversal of 11143901 is 10934111.

11143901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9765625 + 1378276 = 3125^2 + 1174^2 .

It is a cyclic number.

It is not a de Polignac number, because 11143901 - 2² = 11143897 is a prime.

Together with 11143903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11143903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571950 + 5571951.

It is an arithmetic number, because the mean of its divisors is an integer number (5571951).

Almost surely, 2^11143901 is an apocalyptic number.

It is an amenable number.

11143901 is a deficient number, since it is larger than the sum of its proper divisors (1).

11143901 is an equidigital number, since it uses as much as digits as its factorization.

11143901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 11143901 is about 3338.2481932894. The cubic root of 11143901 is about 223.3636074403.

The spelling of 11143901 in words is "eleven million, one hundred forty-three thousand, nine hundred one".