813322 has 4 divisors (see below), whose sum is σ = 1219986. Its totient is φ = 406660.

The previous prime is 813311. The next prime is 813343. The reversal of 813322 is 223318.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223318 = 2 ⋅111659.

It can be written as a sum of positive squares in only one way, i.e., 811801 + 1521 = 901^2 + 39^2 .

It is a super-2 number, since 2×813322² = 1322985351368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813322.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203329 + ... + 203332.

2⁸¹³³²² is an apocalyptic number.

813322 is a deficient number, since it is larger than the sum of its proper divisors (406664).

813322 is a wasteful number, since it uses less digits than its factorization.

813322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406663.

The product of its digits is 288, while the sum is 19.

The square root of 813322 is about 901.8436671619. The cubic root of 813322 is about 93.3442362546.

It can be divided in two parts, 81 and 3322, that added together give a triangular number (3403 = T₈₂).

The spelling of 813322 in words is "eight hundred thirteen thousand, three hundred twenty-two".