83320031 has 2 divisors, whose sum is σ = 83320032. Its totient is φ = 83320030.

The previous prime is 83320021. The next prime is 83320037. The reversal of 83320031 is 13002338.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83320031 - 2¹⁰ = 83319007 is a prime.

It is a super-2 number, since 2×83320031² = 13884455131681922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 83319985 and 83320012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83320037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41660015 + 41660016.

It is an arithmetic number, because the mean of its divisors is an integer number (41660016).

Almost surely, 2^83320031 is an apocalyptic number.

83320031 is a deficient number, since it is larger than the sum of its proper divisors (1).

83320031 is an equidigital number, since it uses as much as digits as its factorization.

83320031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 83320031 is about 9127.9806638708. The cubic root of 83320031 is about 436.7669898143.

Adding to 83320031 its reverse (13002338), we get a palindrome (96322369).

The spelling of 83320031 in words is "eighty-three million, three hundred twenty thousand, thirty-one".