331226801 has 2 divisors, whose sum is σ = 331226802. Its totient is φ = 331226800.

The previous prime is 331226789. The next prime is 331226837. The reversal of 331226801 is 108622133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311875600 + 19351201 = 17660^2 + 4399^2 .

It is an emirp because it is prime and its reverse (108622133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331226801 - 2⁶ = 331226737 is a prime.

It is a super-2 number, since 2×331226801² = 219422387401387202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331220801) 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, 165613400 + 165613401.

It is an arithmetic number, because the mean of its divisors is an integer number (165613401).

Almost surely, 2^331226801 is an apocalyptic number.

It is an amenable number.

331226801 is a deficient number, since it is larger than the sum of its proper divisors (1).

331226801 is an equidigital number, since it uses as much as digits as its factorization.

331226801 is an odious number, because the sum of its binary digits is odd.

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

The square root of 331226801 is about 18199.6373864976. The cubic root of 331226801 is about 691.8975987839.

Adding to 331226801 its reverse (108622133), we get a palindrome (439848934).

The spelling of 331226801 in words is "three hundred thirty-one million, two hundred twenty-six thousand, eight hundred one".