82631213 has 16 divisors (see below), whose sum is σ = 98036736. Its totient is φ = 68152320.

The previous prime is 82631177. The next prime is 82631221. The reversal of 82631213 is 31213628.

It is a cyclic number.

It is not a de Polignac number, because 82631213 - 2¹⁰ = 82630189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82631243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40895 + ... + 42867.

It is an arithmetic number, because the mean of its divisors is an integer number (6127296).

Almost surely, 2^82631213 is an apocalyptic number.

It is an amenable number.

82631213 is a deficient number, since it is larger than the sum of its proper divisors (15405523).

82631213 is a wasteful number, since it uses less digits than its factorization.

82631213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204.

The product of its digits is 1728, while the sum is 26.

The square root of 82631213 is about 9090.1712305105. The cubic root of 82631213 is about 435.5600537241.

The spelling of 82631213 in words is "eighty-two million, six hundred thirty-one thousand, two hundred thirteen".