84630231 has 16 divisors (see below), whose sum is σ = 143289600. Its totient is φ = 48360024.

The previous prime is 84630229. The next prime is 84630239. The reversal of 84630231 is 13203648.

It is a happy number.

84630231 is a `hidden beast` number, since 8 + 4 + 630 + 23 + 1 = 666.

It is not a de Polignac number, because 84630231 - 2¹ = 84630229 is a prime.

It is a super-2 number, since 2×84630231² = 14324551998226722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 84630195 and 84630204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84630239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223701 + ... + 224078.

It is an arithmetic number, because the mean of its divisors is an integer number (8955600).

Almost surely, 2^84630231 is an apocalyptic number.

84630231 is a deficient number, since it is larger than the sum of its proper divisors (58659369).

84630231 is a wasteful number, since it uses less digits than its factorization.

84630231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447795 (or 447789 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 84630231 is about 9199.4690607665. The cubic root of 84630231 is about 439.0444673833.

Adding to 84630231 its reverse (13203648), we get a palindrome (97833879).

The spelling of 84630231 in words is "eighty-four million, six hundred thirty thousand, two hundred thirty-one".