83900231 has 2 divisors, whose sum is σ = 83900232. Its totient is φ = 83900230.

The previous prime is 83900209. The next prime is 83900239. The reversal of 83900231 is 13200938.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83900231 is a prime.

It is a super-2 number, since 2×83900231² = 14078497523706722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83900231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83900239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41950115 + 41950116.

It is an arithmetic number, because the mean of its divisors is an integer number (41950116).

Almost surely, 2^83900231 is an apocalyptic number.

83900231 is a deficient number, since it is larger than the sum of its proper divisors (1).

83900231 is an equidigital number, since it uses as much as digits as its factorization.

83900231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 83900231 is about 9159.7069276260. The cubic root of 83900231 is about 437.7784563111.

The spelling of 83900231 in words is "eighty-three million, nine hundred thousand, two hundred thirty-one".