82585031 has 4 divisors (see below), whose sum is σ = 87442992. Its totient is φ = 77727072.

The previous prime is 82584949. The next prime is 82585037. The reversal of 82585031 is 13058528.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82585031 is a prime.

It is a super-2 number, since 2×82585031² = 13640574690541922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82585037) 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, 2428955 + ... + 2428988.

It is an arithmetic number, because the mean of its divisors is an integer number (21860748).

Almost surely, 2^82585031 is an apocalyptic number.

82585031 is a deficient number, since it is larger than the sum of its proper divisors (4857961).

82585031 is a wasteful number, since it uses less digits than its factorization.

82585031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857960.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 82585031 is about 9087.6306593083. The cubic root of 82585031 is about 435.4788947922.

The spelling of 82585031 in words is "eighty-two million, five hundred eighty-five thousand, thirty-one".