91230 has 16 divisors (see below), whose sum is σ = 219024. Its totient is φ = 24320.

The previous prime is 91229. The next prime is 91237. The reversal of 91230 is 3219.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (13689).

2⁹¹²³⁰ is an apocalyptic number.

91230 is an abundant number, since it is smaller than the sum of its proper divisors (127794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109512).

91230 is a wasteful number, since it uses less digits than its factorization.

91230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 91230 is about 302.0430432902. The cubic root of 91230 is about 45.0172773163.

Adding to 91230 its reverse (3219), we get a palindrome (94449).

The spelling of 91230 in words is "ninety-one thousand, two hundred thirty".