812361 has 16 divisors (see below), whose sum is σ = 1198080. Its totient is φ = 485520.

The previous prime is 812359. The next prime is 812363. The reversal of 812361 is 163218.

It is an interprime number because it is at equal distance from previous prime (812359) and next prime (812363).

It is not a de Polignac number, because 812361 - 2¹ = 812359 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 812361.

It is not an unprimeable number, because it can be changed into a prime (812363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3280 + ... + 3518.

It is an arithmetic number, because the mean of its divisors is an integer number (74880).

2⁸¹²³⁶¹ is an apocalyptic number.

It is an amenable number.

812361 is a deficient number, since it is larger than the sum of its proper divisors (385719).

812361 is a wasteful number, since it uses less digits than its factorization.

812361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356.

The product of its digits is 288, while the sum is 21.

The square root of 812361 is about 901.3107122408. The cubic root of 812361 is about 93.3074573959.

Adding to 812361 its reverse (163218), we get a palindrome (975579).

It can be divided in two parts, 81 and 2361, that added together give a palindrome (2442).

The spelling of 812361 in words is "eight hundred twelve thousand, three hundred sixty-one".