84031361 has 2 divisors, whose sum is σ = 84031362. Its totient is φ = 84031360.

The previous prime is 84031309. The next prime is 84031369. The reversal of 84031361 is 16313048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60450625 + 23580736 = 7775^2 + 4856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84031361 is a prime.

It is a super-2 number, since 2×84031361² = 14122539263024642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84031361.

It is not a weakly prime, because it can be changed into another prime (84031369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42015680 + 42015681.

It is an arithmetic number, because the mean of its divisors is an integer number (42015681).

Almost surely, 2^84031361 is an apocalyptic number.

It is an amenable number.

84031361 is a deficient number, since it is larger than the sum of its proper divisors (1).

84031361 is an equidigital number, since it uses as much as digits as its factorization.

84031361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 84031361 is about 9166.8621130679. The cubic root of 84031361 is about 438.0064096280.

The spelling of 84031361 in words is "eighty-four million, thirty-one thousand, three hundred sixty-one".