813346123 has 4 divisors (see below), whose sum is σ = 826679728. Its totient is φ = 800012520.

The previous prime is 813346117. The next prime is 813346199. The reversal of 813346123 is 321643318.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321643318 = 2 ⋅160821659.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813346123 is a prime.

It is a super-2 number, since 2×813346123² = 1323063831598262258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813349123) 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, 6666711 + ... + 6666832.

It is an arithmetic number, because the mean of its divisors is an integer number (206669932).

Almost surely, 2^813346123 is an apocalyptic number.

813346123 is a deficient number, since it is larger than the sum of its proper divisors (13333605).

813346123 is a wasteful number, since it uses less digits than its factorization.

813346123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13333604.

The product of its digits is 10368, while the sum is 31.

The square root of 813346123 is about 28519.2237446954. The cubic root of 813346123 is about 933.4515910388.

The spelling of 813346123 in words is "eight hundred thirteen million, three hundred forty-six thousand, one hundred twenty-three".