82311297 has 8 divisors (see below), whose sum is σ = 116204256. Its totient is φ = 51646272.

The previous prime is 82311289. The next prime is 82311329. The reversal of 82311297 is 79211328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82311297 - 2³ = 82311289 is a prime.

It is a super-2 number, since 2×82311297² = 13550299227644418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82311247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806923 + ... + 807024.

It is an arithmetic number, because the mean of its divisors is an integer number (14525532).

Almost surely, 2^82311297 is an apocalyptic number.

It is an amenable number.

82311297 is a deficient number, since it is larger than the sum of its proper divisors (33892959).

82311297 is a wasteful number, since it uses less digits than its factorization.

82311297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613967.

The product of its digits is 6048, while the sum is 33.

The square root of 82311297 is about 9072.5573572174. The cubic root of 82311297 is about 434.9972202227.

The spelling of 82311297 in words is "eighty-two million, three hundred eleven thousand, two hundred ninety-seven".