82647131 has 24 divisors (see below), whose sum is σ = 101687040. Its totient is φ = 65616480.

The previous prime is 82647127. The next prime is 82647151. The reversal of 82647131 is 13174628.

It is not a de Polignac number, because 82647131 - 2² = 82647127 is a prime.

It is a super-2 number, since 2×82647131² = 13661096525062322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82647101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494810 + ... + 494976.

It is an arithmetic number, because the mean of its divisors is an integer number (4236960).

Almost surely, 2^82647131 is an apocalyptic number.

82647131 is a deficient number, since it is larger than the sum of its proper divisors (19039909).

82647131 is a wasteful number, since it uses less digits than its factorization.

82647131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 254 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 82647131 is about 9091.0467494123. The cubic root of 82647131 is about 435.5880205562.

The spelling of 82647131 in words is "eighty-two million, six hundred forty-seven thousand, one hundred thirty-one".