823213126 has 16 divisors (see below), whose sum is σ = 1247439600. Its totient is φ = 407407968.

The previous prime is 823213109. The next prime is 823213141. The reversal of 823213126 is 621312328.

It is a junction number, because it is equal to n+sod(n) for n = 823213094 and 823213103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376705 + ... + 378883.

It is an arithmetic number, because the mean of its divisors is an integer number (77964975).

Almost surely, 2^823213126 is an apocalyptic number.

823213126 is a deficient number, since it is larger than the sum of its proper divisors (424226474).

823213126 is a wasteful number, since it uses less digits than its factorization.

823213126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023.

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

The square root of 823213126 is about 28691.6908877814. The cubic root of 823213126 is about 937.2111113680.

The spelling of 823213126 in words is "eight hundred twenty-three million, two hundred thirteen thousand, one hundred twenty-six".