84148231 has 2 divisors, whose sum is σ = 84148232. Its totient is φ = 84148230.

The previous prime is 84148213. The next prime is 84148241. The reversal of 84148231 is 13284148.

Together with previous prime (84148213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84148231 - 2⁵ = 84148199 is a prime.

It is a super-2 number, since 2×84148231² = 14161849560858722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84148193 and 84148202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84148241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42074115 + 42074116.

It is an arithmetic number, because the mean of its divisors is an integer number (42074116).

Almost surely, 2^84148231 is an apocalyptic number.

84148231 is a deficient number, since it is larger than the sum of its proper divisors (1).

84148231 is an equidigital number, since it uses as much as digits as its factorization.

84148231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 31.

The square root of 84148231 is about 9173.2344895353. The cubic root of 84148231 is about 438.2093739157.

The spelling of 84148231 in words is "eighty-four million, one hundred forty-eight thousand, two hundred thirty-one".