812247103 has 4 divisors (see below), whose sum is σ = 812639128. Its totient is φ = 811855080.

The previous prime is 812247083. The next prime is 812247113. The reversal of 812247103 is 301742218.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 812247103 - 2⁵ = 812247071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812247113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192888 + ... + 197053.

It is an arithmetic number, because the mean of its divisors is an integer number (203159782).

Almost surely, 2^812247103 is an apocalyptic number.

812247103 is a deficient number, since it is larger than the sum of its proper divisors (392025).

812247103 is a wasteful number, since it uses less digits than its factorization.

812247103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392024.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 812247103 is about 28499.9491753933. The cubic root of 812247103 is about 933.0309647092.

It can be divided in two parts, 8122 and 47103, that added together give a square (55225 = 235²).

The spelling of 812247103 in words is "eight hundred twelve million, two hundred forty-seven thousand, one hundred three".