83231791 has 2 divisors, whose sum is σ = 83231792. Its totient is φ = 83231790.

The previous prime is 83231773. The next prime is 83231801. The reversal of 83231791 is 19713238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83231791 - 2¹¹ = 83229743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83231741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41615895 + 41615896.

It is an arithmetic number, because the mean of its divisors is an integer number (41615896).

Almost surely, 2^83231791 is an apocalyptic number.

83231791 is a deficient number, since it is larger than the sum of its proper divisors (1).

83231791 is an equidigital number, since it uses as much as digits as its factorization.

83231791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 83231791 is about 9123.1458938241. The cubic root of 83231791 is about 436.6127494630.

It can be divided in two parts, 832 and 31791, that added together give a palindrome (32623).

The spelling of 83231791 in words is "eighty-three million, two hundred thirty-one thousand, seven hundred ninety-one".