82312519 has 2 divisors, whose sum is σ = 82312520. Its totient is φ = 82312518.

The previous prime is 82312507. The next prime is 82312523. The reversal of 82312519 is 91521328.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82312519 is a prime.

It is a super-2 number, since 2×82312519² = 13550701568250722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82312319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41156259 + 41156260.

It is an arithmetic number, because the mean of its divisors is an integer number (41156260).

Almost surely, 2^82312519 is an apocalyptic number.

82312519 is a deficient number, since it is larger than the sum of its proper divisors (1).

82312519 is an equidigital number, since it uses as much as digits as its factorization.

82312519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 82312519 is about 9072.6247029181. The cubic root of 82312519 is about 434.9993728797. Note that the first 3 decimals are identical.

The spelling of 82312519 in words is "eighty-two million, three hundred twelve thousand, five hundred nineteen".