84851231 has 2 divisors, whose sum is σ = 84851232. Its totient is φ = 84851230.

The previous prime is 84851219. The next prime is 84851243. The reversal of 84851231 is 13215848.

It is a balanced prime because it is at equal distance from previous prime (84851219) and next prime (84851243).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84851231 is a prime.

It is a super-2 number, since 2×84851231² = 14399462804430722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84851731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42425615 + 42425616.

It is an arithmetic number, because the mean of its divisors is an integer number (42425616).

Almost surely, 2^84851231 is an apocalyptic number.

84851231 is a deficient number, since it is larger than the sum of its proper divisors (1).

84851231 is an equidigital number, since it uses as much as digits as its factorization.

84851231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The square root of 84851231 is about 9211.4727921218. The cubic root of 84851231 is about 439.4263029260.

The spelling of 84851231 in words is "eighty-four million, eight hundred fifty-one thousand, two hundred thirty-one".