11203987 has 2 divisors, whose sum is σ = 11203988. Its totient is φ = 11203986.

The previous prime is 11203963. The next prime is 11203993. The reversal of 11203987 is 78930211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11203987 is a prime.

It is not a weakly prime, because it can be changed into another prime (11201987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601993 + 5601994.

It is an arithmetic number, because the mean of its divisors is an integer number (5601994).

Almost surely, 2^11203987 is an apocalyptic number.

11203987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11203987 is an equidigital number, since it uses as much as digits as its factorization.

11203987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 11203987 is about 3347.2357251918. The cubic root of 11203987 is about 223.7643341524.

The spelling of 11203987 in words is "eleven million, two hundred three thousand, nine hundred eighty-seven".