16231801 has 2 divisors, whose sum is σ = 16231802. Its totient is φ = 16231800.

The previous prime is 16231771. The next prime is 16231819. The reversal of 16231801 is 10813261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9734400 + 6497401 = 3120^2 + 2549^2 .

It is a cyclic number.

It is not a de Polignac number, because 16231801 - 2¹¹ = 16229753 is a prime.

It is not a weakly prime, because it can be changed into another prime (16231001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8115900 + 8115901.

It is an arithmetic number, because the mean of its divisors is an integer number (8115901).

Almost surely, 2^16231801 is an apocalyptic number.

It is an amenable number.

16231801 is a deficient number, since it is larger than the sum of its proper divisors (1).

16231801 is an equidigital number, since it uses as much as digits as its factorization.

16231801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 16231801 is about 4028.8709336488. The cubic root of 16231801 is about 253.1952592853.

The spelling of 16231801 in words is "sixteen million, two hundred thirty-one thousand, eight hundred one".