331000898161 has 2 divisors, whose sum is σ = 331000898162. Its totient is φ = 331000898160.

The previous prime is 331000898093. The next prime is 331000898209. The reversal of 331000898161 is 161898000133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279814550625 + 51186347536 = 528975^2 + 226244^2 .

It is a cyclic number.

It is not a de Polignac number, because 331000898161 - 2⁹ = 331000897649 is a prime.

It is not a weakly prime, because it can be changed into another prime (331000808161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165500449080 + 165500449081.

It is an arithmetic number, because the mean of its divisors is an integer number (165500449081).

Almost surely, 2^331000898161 is an apocalyptic number.

It is an amenable number.

331000898161 is a deficient number, since it is larger than the sum of its proper divisors (1).

331000898161 is an equidigital number, since it uses as much as digits as its factorization.

331000898161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

Adding to 331000898161 its reverse (161898000133), we get a palindrome (492898898294).

The spelling of 331000898161 in words is "three hundred thirty-one billion, eight hundred ninety-eight thousand, one hundred sixty-one".