82706231 has 4 divisors (see below), whose sum is σ = 85558200. Its totient is φ = 79854264.

The previous prime is 82706209. The next prime is 82706237. The reversal of 82706231 is 13260728.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82706231 - 2²⁶ = 15597367 is a prime.

It is a super-2 number, since 2×82706231² = 13680641292450722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2851939 = 82706231 / (8 + 2 + 7 + 0 + 6 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82706194 and 82706203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82706237) 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, 1425941 + ... + 1425998.

It is an arithmetic number, because the mean of its divisors is an integer number (21389550).

Almost surely, 2^82706231 is an apocalyptic number.

82706231 is a deficient number, since it is larger than the sum of its proper divisors (2851969).

82706231 is a wasteful number, since it uses less digits than its factorization.

82706231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851968.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 82706231 is about 9094.2966193104. The cubic root of 82706231 is about 435.6918237893.

Adding to 82706231 its reverse (13260728), we get a palindrome (95966959).

The spelling of 82706231 in words is "eighty-two million, seven hundred six thousand, two hundred thirty-one".