331130280281 has 2 divisors, whose sum is σ = 331130280282. Its totient is φ = 331130280280.

The previous prime is 331130280251. The next prime is 331130280287. The reversal of 331130280281 is 182082031133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188261399881 + 142868880400 = 433891^2 + 377980^2 .

It is a cyclic number.

It is not a de Polignac number, because 331130280281 - 2²² = 331126085977 is a prime.

It is a super-2 number, since 2×331130280281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331130280287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165565140140 + 165565140141.

It is an arithmetic number, because the mean of its divisors is an integer number (165565140141).

Almost surely, 2^331130280281 is an apocalyptic number.

It is an amenable number.

331130280281 is a deficient number, since it is larger than the sum of its proper divisors (1).

331130280281 is an equidigital number, since it uses as much as digits as its factorization.

331130280281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 331130280281 in words is "three hundred thirty-one billion, one hundred thirty million, two hundred eighty thousand, two hundred eighty-one".