82193531 has 12 divisors (see below), whose sum is σ = 95855760. Its totient is φ = 70272720.

The previous prime is 82193519. The next prime is 82193533. The reversal of 82193531 is 13539128.

It is not a de Polignac number, because 82193531 - 2²² = 77999227 is a prime.

It is a super-2 number, since 2×82193531² = 13511553076495922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82193533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19601 + ... + 23421.

It is an arithmetic number, because the mean of its divisors is an integer number (7987980).

Almost surely, 2^82193531 is an apocalyptic number.

82193531 is a deficient number, since it is larger than the sum of its proper divisors (13662229).

82193531 is a wasteful number, since it uses less digits than its factorization.

82193531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274 (or 4267 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 82193531 is about 9066.0648023274. The cubic root of 82193531 is about 434.7896653459.

The spelling of 82193531 in words is "eighty-two million, one hundred ninety-three thousand, five hundred thirty-one".