82730531 has 4 divisors (see below), whose sum is σ = 89094432. Its totient is φ = 76366632.

The previous prime is 82730519. The next prime is 82730539. The reversal of 82730531 is 13503728.

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 82730531 - 2¹⁴ = 82714147 is a prime.

It is a super-2 number, since 2×82730531² = 13688681519083922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82730494 and 82730503.

It is not an unprimeable number, because it can be changed into a prime (82730539) 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, 3181931 + ... + 3181956.

It is an arithmetic number, because the mean of its divisors is an integer number (22273608).

Almost surely, 2^82730531 is an apocalyptic number.

82730531 is a deficient number, since it is larger than the sum of its proper divisors (6363901).

82730531 is a wasteful number, since it uses less digits than its factorization.

82730531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6363900.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 82730531 is about 9095.6325233598. The cubic root of 82730531 is about 435.7344899603.

The spelling of 82730531 in words is "eighty-two million, seven hundred thirty thousand, five hundred thirty-one".