82231493 has 4 divisors (see below), whose sum is σ = 82265100. Its totient is φ = 82197888.

The previous prime is 82231489. The next prime is 82231517. The reversal of 82231493 is 39413228.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68674369 + 13557124 = 8287^2 + 3682^2 .

It is a cyclic number.

It is not a de Polignac number, because 82231493 - 2² = 82231489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82231403) 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, 12818 + ... + 18131.

It is an arithmetic number, because the mean of its divisors is an integer number (20566275).

Almost surely, 2^82231493 is an apocalyptic number.

It is an amenable number.

82231493 is a deficient number, since it is larger than the sum of its proper divisors (33607).

82231493 is a wasteful number, since it uses less digits than its factorization.

82231493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33606.

The product of its digits is 10368, while the sum is 32.

The square root of 82231493 is about 9068.1581922682. The cubic root of 82231493 is about 434.8565925304.

The spelling of 82231493 in words is "eighty-two million, two hundred thirty-one thousand, four hundred ninety-three".