7813423 has 2 divisors, whose sum is σ = 7813424. Its totient is φ = 7813422.

The previous prime is 7813417. The next prime is 7813433. The reversal of 7813423 is 3243187.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7813423 is a prime.

It is a super-2 number, since 2×7813423² = 122099157953858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7813391 and 7813400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7813433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3906711 + 3906712.

It is an arithmetic number, because the mean of its divisors is an integer number (3906712).

Almost surely, 2^7813423 is an apocalyptic number.

7813423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7813423 is an equidigital number, since it uses as much as digits as its factorization.

7813423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 7813423 is about 2795.2500782578. The cubic root of 7813423 is about 198.4329454346.

The spelling of 7813423 in words is "seven million, eight hundred thirteen thousand, four hundred twenty-three".