84372031 has 2 divisors, whose sum is σ = 84372032. Its totient is φ = 84372030.

The previous prime is 84372011. The next prime is 84372077. The reversal of 84372031 is 13027348.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84372031 - 2⁵ = 84371999 is a prime.

It is a super-2 number, since 2×84372031² = 14237279230129922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4909411 and since 84372031 and 4909411 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84372011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42186015 + 42186016.

It is an arithmetic number, because the mean of its divisors is an integer number (42186016).

Almost surely, 2^84372031 is an apocalyptic number.

84372031 is a deficient number, since it is larger than the sum of its proper divisors (1).

84372031 is an equidigital number, since it uses as much as digits as its factorization.

84372031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 84372031 is about 9185.4249221253. The cubic root of 84372031 is about 438.5975161331.

Adding to 84372031 its reverse (13027348), we get a palindrome (97399379).

The spelling of 84372031 in words is "eighty-four million, three hundred seventy-two thousand, thirty-one".