84531123 has 12 divisors (see below), whose sum is σ = 129283128. Its totient is φ = 53039040.

The previous prime is 84531121. The next prime is 84531137. The reversal of 84531123 is 32113548.

It is a happy number.

84531123 is a `hidden beast` number, since 8 + 4 + 531 + 123 = 666.

It is not a de Polignac number, because 84531123 - 2¹ = 84531121 is a prime.

It is a super-2 number, since 2×84531123² = 14291021511282258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84531121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276093 + ... + 276398.

It is an arithmetic number, because the mean of its divisors is an integer number (10773594).

Almost surely, 2^84531123 is an apocalyptic number.

84531123 is a deficient number, since it is larger than the sum of its proper divisors (44752005).

84531123 is a wasteful number, since it uses less digits than its factorization.

84531123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552514 (or 552511 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 84531123 is about 9194.0808676017. The cubic root of 84531123 is about 438.8730163736.

The spelling of 84531123 in words is "eighty-four million, five hundred thirty-one thousand, one hundred twenty-three".