12611903 has 2 divisors, whose sum is σ = 12611904. Its totient is φ = 12611902.

The previous prime is 12611891. The next prime is 12611917. The reversal of 12611903 is 30911621.

It is a happy number.

12611903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12611903 - 2¹⁰ = 12610879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12611993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305951 + 6305952.

It is an arithmetic number, because the mean of its divisors is an integer number (6305952).

Almost surely, 2^12611903 is an apocalyptic number.

12611903 is a deficient number, since it is larger than the sum of its proper divisors (1).

12611903 is an equidigital number, since it uses as much as digits as its factorization.

12611903 is an evil number, because the sum of its binary digits is even.

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

The square root of 12611903 is about 3551.3241192547. The cubic root of 12611903 is about 232.7699289127.

The spelling of 12611903 in words is "twelve million, six hundred eleven thousand, nine hundred three".