83231887 has 2 divisors, whose sum is σ = 83231888. Its totient is φ = 83231886.

The previous prime is 83231867. The next prime is 83231891. The reversal of 83231887 is 78813238.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83231887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83231867) 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, 41615943 + 41615944.

It is an arithmetic number, because the mean of its divisors is an integer number (41615944).

Almost surely, 2^83231887 is an apocalyptic number.

83231887 is a deficient number, since it is larger than the sum of its proper divisors (1).

83231887 is an equidigital number, since it uses as much as digits as its factorization.

83231887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 83231887 is about 9123.1511551656. The cubic root of 83231887 is about 436.6129173268.

The spelling of 83231887 in words is "eighty-three million, two hundred thirty-one thousand, eight hundred eighty-seven".