82272431 has 2 divisors, whose sum is σ = 82272432. Its totient is φ = 82272430.

The previous prime is 82272427. The next prime is 82272461. The reversal of 82272431 is 13427228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82272431 - 2² = 82272427 is a prime.

It is a super-2 number, since 2×82272431² = 13537505805299522, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4794320 and since 82272431 and 4794320 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 82272394 and 82272403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82272461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41136215 + 41136216.

It is an arithmetic number, because the mean of its divisors is an integer number (41136216).

Almost surely, 2^82272431 is an apocalyptic number.

82272431 is a deficient number, since it is larger than the sum of its proper divisors (1).

82272431 is an equidigital number, since it uses as much as digits as its factorization.

82272431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 82272431 is about 9070.4151503666. The cubic root of 82272431 is about 434.9287433377.

Adding to 82272431 its reverse (13427228), we get a palindrome (95699659).

The spelling of 82272431 in words is "eighty-two million, two hundred seventy-two thousand, four hundred thirty-one".