84316031 has 2 divisors, whose sum is σ = 84316032. Its totient is φ = 84316030.

The previous prime is 84316009. The next prime is 84316033. The reversal of 84316031 is 13061348.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84316031 - 2¹⁴ = 84299647 is a prime.

It is a super-2 number, since 2×84316031² = 14218386167185922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 84316033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84316033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42158015 + 42158016.

It is an arithmetic number, because the mean of its divisors is an integer number (42158016).

Almost surely, 2^84316031 is an apocalyptic number.

84316031 is a deficient number, since it is larger than the sum of its proper divisors (1).

84316031 is an equidigital number, since it uses as much as digits as its factorization.

84316031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 84316031 is about 9182.3761086115. The cubic root of 84316031 is about 438.5004583102.

Adding to 84316031 its reverse (13061348), we get a palindrome (97377379).

The spelling of 84316031 in words is "eighty-four million, three hundred sixteen thousand, thirty-one".