12956903 has 2 divisors, whose sum is σ = 12956904. Its totient is φ = 12956902.

The previous prime is 12956863. The next prime is 12956927. The reversal of 12956903 is 30965921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12956903 is a prime.

It is a Sophie Germain prime.

It is equal to p₈₄₆₆₂₉ and since 12956903 and 846629 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12956953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6478451 + 6478452.

It is an arithmetic number, because the mean of its divisors is an integer number (6478452).

Almost surely, 2^12956903 is an apocalyptic number.

12956903 is a deficient number, since it is larger than the sum of its proper divisors (1).

12956903 is an equidigital number, since it uses as much as digits as its factorization.

12956903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 12956903 is about 3599.5698354109. The cubic root of 12956903 is about 234.8733465705.

The spelling of 12956903 in words is "twelve million, nine hundred fifty-six thousand, nine hundred three".