84006031 has 2 divisors, whose sum is σ = 84006032. Its totient is φ = 84006030.

The previous prime is 84006023. The next prime is 84006077. The reversal of 84006031 is 13060048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84006031 - 2³ = 84006023 is a prime.

It is a super-2 number, since 2×84006031² = 14114026488745922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84005993 and 84006011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84006731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42003015 + 42003016.

It is an arithmetic number, because the mean of its divisors is an integer number (42003016).

Almost surely, 2^84006031 is an apocalyptic number.

84006031 is a deficient number, since it is larger than the sum of its proper divisors (1).

84006031 is an equidigital number, since it uses as much as digits as its factorization.

84006031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 84006031 is about 9165.4804020302. The cubic root of 84006031 is about 437.9623950395.

Adding to 84006031 its reverse (13060048), we get a palindrome (97066079).

The spelling of 84006031 in words is "eighty-four million, six thousand, thirty-one".