83427031 has 2 divisors, whose sum is σ = 83427032. Its totient is φ = 83427030.

The previous prime is 83427017. The next prime is 83427061. The reversal of 83427031 is 13072438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83427031 - 2⁵ = 83426999 is a prime.

It is a super-2 number, since 2×83427031² = 13920139002949922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83427061) 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, 41713515 + 41713516.

It is an arithmetic number, because the mean of its divisors is an integer number (41713516).

Almost surely, 2^83427031 is an apocalyptic number.

83427031 is a deficient number, since it is larger than the sum of its proper divisors (1).

83427031 is an equidigital number, since it uses as much as digits as its factorization.

83427031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 83427031 is about 9133.8398825467. The cubic root of 83427031 is about 436.9538759538.

Adding to 83427031 its reverse (13072438), we get a palindrome (96499469).

The spelling of 83427031 in words is "eighty-three million, four hundred twenty-seven thousand, thirty-one".