84245031 has 24 divisors (see below), whose sum is σ = 137948720. Its totient is φ = 49113216.

The previous prime is 84245027. The next prime is 84245033. The reversal of 84245031 is 13054248.

It is not a de Polignac number, because 84245031 - 2² = 84245027 is a prime.

It is a super-2 number, since 2×84245031² = 14194450496381922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84244986 and 84245004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84245033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16726 + ... + 21171.

Almost surely, 2^84245031 is an apocalyptic number.

84245031 is a deficient number, since it is larger than the sum of its proper divisors (53703689).

84245031 is a wasteful number, since it uses less digits than its factorization.

84245031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37935 (or 37932 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 84245031 is about 9178.5091926739. The cubic root of 84245031 is about 438.3773410526.

Adding to 84245031 its reverse (13054248), we get a palindrome (97299279).

The spelling of 84245031 in words is "eighty-four million, two hundred forty-five thousand, thirty-one".