813355103 has 6 divisors (see below), whose sum is σ = 894018552. Its totient is φ = 739413620.

The previous prime is 813355099. The next prime is 813355139. The reversal of 813355103 is 301553318.

It is not a de Polignac number, because 813355103 - 2² = 813355099 is a prime.

It is a super-2 number, since 2×813355103² = 1323093047152281218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813355703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3360851 + ... + 3361092.

It is an arithmetic number, because the mean of its divisors is an integer number (149003092).

Almost surely, 2^813355103 is an apocalyptic number.

813355103 is a deficient number, since it is larger than the sum of its proper divisors (80663449).

813355103 is a wasteful number, since it uses less digits than its factorization.

813355103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6721965 (or 6721954 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 813355103 is about 28519.3811819261. The cubic root of 813355103 is about 933.4550263800.

It can be divided in two parts, 8133 and 55103, that added together give a palindrome (63236).

The spelling of 813355103 in words is "eight hundred thirteen million, three hundred fifty-five thousand, one hundred three".