84197031 has 4 divisors (see below), whose sum is σ = 112262712. Its totient is φ = 56131352.

The previous prime is 84197027. The next prime is 84197051. The reversal of 84197031 is 13079148.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84197031 - 2² = 84197027 is a prime.

It is a super-2 number, since 2×84197031² = 14178280058429922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84196983 and 84197001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84197021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14032836 + ... + 14032841.

It is an arithmetic number, because the mean of its divisors is an integer number (28065678).

Almost surely, 2^84197031 is an apocalyptic number.

84197031 is a deficient number, since it is larger than the sum of its proper divisors (28065681).

84197031 is a wasteful number, since it uses less digits than its factorization.

84197031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28065680.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 84197031 is about 9175.8940163888. The cubic root of 84197031 is about 438.2940676546.

The spelling of 84197031 in words is "eighty-four million, one hundred ninety-seven thousand, thirty-one".