812613403 has 12 divisors (see below), whose sum is σ = 945992520. Its totient is φ = 696004512.

The previous prime is 812613383. The next prime is 812613407. The reversal of 812613403 is 304316218.

It is not a de Polignac number, because 812613403 - 2⁵ = 812613371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812613407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69183 + ... + 80071.

It is an arithmetic number, because the mean of its divisors is an integer number (78832710).

Almost surely, 2^812613403 is an apocalyptic number.

812613403 is a deficient number, since it is larger than the sum of its proper divisors (133379117).

812613403 is a wasteful number, since it uses less digits than its factorization.

812613403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12426 (or 12419 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 812613403 is about 28506.3747782842. The cubic root of 812613403 is about 933.1712003091.

The spelling of 812613403 in words is "eight hundred twelve million, six hundred thirteen thousand, four hundred three".