83406331 has 2 divisors, whose sum is σ = 83406332. Its totient is φ = 83406330.

The previous prime is 83406329. The next prime is 83406343. The reversal of 83406331 is 13360438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83406331 - 2¹ = 83406329 is a prime.

It is a super-2 number, since 2×83406331² = 13913232101763122, which contains 22 as substring.

Together with 83406329, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 83406331.

It is not a weakly prime, because it can be changed into another prime (83406031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41703165 + 41703166.

It is an arithmetic number, because the mean of its divisors is an integer number (41703166).

Almost surely, 2^83406331 is an apocalyptic number.

83406331 is a deficient number, since it is larger than the sum of its proper divisors (1).

83406331 is an equidigital number, since it uses as much as digits as its factorization.

83406331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 83406331 is about 9132.7066634158. The cubic root of 83406331 is about 436.9177338173.

Adding to 83406331 its reverse (13360438), we get a palindrome (96766769).

The spelling of 83406331 in words is "eighty-three million, four hundred six thousand, three hundred thirty-one".