81230 has 8 divisors (see below), whose sum is σ = 146232. Its totient is φ = 32488.

The previous prime is 81223. The next prime is 81233. The reversal of 81230 is 3218.

81230 = 141² + 142² + ... + 144².

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81233) 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, 4052 + ... + 4071.

It is an arithmetic number, because the mean of its divisors is an integer number (18279).

2⁸¹²³⁰ is an apocalyptic number.

81230 is a deficient number, since it is larger than the sum of its proper divisors (65002).

81230 is a wasteful number, since it uses less digits than its factorization.

81230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8130.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 81230 is about 285.0087717948. The cubic root of 81230 is about 43.3084011740.

Adding to 81230 its reverse (3218), we get a palindrome (84448).

The spelling of 81230 in words is "eighty-one thousand, two hundred thirty".