84431371 has 2 divisors, whose sum is σ = 84431372. Its totient is φ = 84431370.

The previous prime is 84431353. The next prime is 84431407. The reversal of 84431371 is 17313448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84431371 - 2⁵ = 84431339 is a prime.

It is not a weakly prime, because it can be changed into another prime (84431311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42215685 + 42215686.

It is an arithmetic number, because the mean of its divisors is an integer number (42215686).

Almost surely, 2^84431371 is an apocalyptic number.

84431371 is a deficient number, since it is larger than the sum of its proper divisors (1).

84431371 is an equidigital number, since it uses as much as digits as its factorization.

84431371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 84431371 is about 9188.6544716841. The cubic root of 84431371 is about 438.7003159082.

The spelling of 84431371 in words is "eighty-four million, four hundred thirty-one thousand, three hundred seventy-one".