82671731 has 16 divisors (see below), whose sum is σ = 90326016. Its totient is φ = 75363456.

The previous prime is 82671707. The next prime is 82671733. The reversal of 82671731 is 13717628.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82671731 is a prime.

It is a super-2 number, since 2×82671731² = 13669230213072722, 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 = 82671691 and 82671700.

It is not an unprimeable number, because it can be changed into a prime (82671733) 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, 85010 + ... + 85976.

It is an arithmetic number, because the mean of its divisors is an integer number (5645376).

Almost surely, 2^82671731 is an apocalyptic number.

82671731 is a deficient number, since it is larger than the sum of its proper divisors (7654285).

82671731 is a wasteful number, since it uses less digits than its factorization.

82671731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138.

The product of its digits is 14112, while the sum is 35.

The square root of 82671731 is about 9092.3996282610. The cubic root of 82671731 is about 435.6312340035.

The spelling of 82671731 in words is "eighty-two million, six hundred seventy-one thousand, seven hundred thirty-one".