812134903 has 2 divisors, whose sum is σ = 812134904. Its totient is φ = 812134902.

The previous prime is 812134891. The next prime is 812134909. The reversal of 812134903 is 309431218.

812134903 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 is a cyclic number.

It is not a de Polignac number, because 812134903 - 2⁵ = 812134871 is a prime.

It is equal to p_41738143 and since 812134903 and 41738143 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 (812134909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406067451 + 406067452.

It is an arithmetic number, because the mean of its divisors is an integer number (406067452).

Almost surely, 2^812134903 is an apocalyptic number.

812134903 is a deficient number, since it is larger than the sum of its proper divisors (1).

812134903 is an equidigital number, since it uses as much as digits as its factorization.

812134903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 812134903 is about 28497.9806828484. The cubic root of 812134903 is about 932.9880012258.

The spelling of 812134903 in words is "eight hundred twelve million, one hundred thirty-four thousand, nine hundred three".