84370231 has 4 divisors (see below), whose sum is σ = 92040264. Its totient is φ = 76700200.

The previous prime is 84370213. The next prime is 84370271. The reversal of 84370231 is 13207348.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84370231 - 2⁵ = 84370199 is a prime.

It is a super-2 number, since 2×84370231² = 14236671757986722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84370231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84370211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835000 + ... + 3835021.

It is an arithmetic number, because the mean of its divisors is an integer number (23010066).

Almost surely, 2^84370231 is an apocalyptic number.

84370231 is a deficient number, since it is larger than the sum of its proper divisors (7670033).

84370231 is a wasteful number, since it uses less digits than its factorization.

84370231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670032.

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

The square root of 84370231 is about 9185.3269402891. The cubic root of 84370231 is about 438.5943970855.

Adding to 84370231 its reverse (13207348), we get a palindrome (97577579).

The spelling of 84370231 in words is "eighty-four million, three hundred seventy thousand, two hundred thirty-one".