331254881 has 2 divisors, whose sum is σ = 331254882. Its totient is φ = 331254880.

The previous prime is 331254829. The next prime is 331254887. The reversal of 331254881 is 188452133.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326344225 + 4910656 = 18065^2 + 2216^2 .

It is a cyclic number.

It is not a de Polignac number, because 331254881 - 2⁶ = 331254817 is a prime.

It is a super-2 number, since 2×331254881² = 219459592372648322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331254887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165627440 + 165627441.

It is an arithmetic number, because the mean of its divisors is an integer number (165627441).

Almost surely, 2^331254881 is an apocalyptic number.

It is an amenable number.

331254881 is a deficient number, since it is larger than the sum of its proper divisors (1).

331254881 is an equidigital number, since it uses as much as digits as its factorization.

331254881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 331254881 is about 18200.4088140899. The cubic root of 331254881 is about 691.9171502770.

The spelling of 331254881 in words is "three hundred thirty-one million, two hundred fifty-four thousand, eight hundred eighty-one".