331066121 has 8 divisors (see below), whose sum is σ = 341985864. Its totient is φ = 320250240.

The previous prime is 331066097. The next prime is 331066123. The reversal of 331066121 is 121660133.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 104142025 + 226924096 = 10205^2 + 15064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331066121 - 2²² = 326871817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331066123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19460 + ... + 32261.

It is an arithmetic number, because the mean of its divisors is an integer number (42748233).

Almost surely, 2^331066121 is an apocalyptic number.

It is an amenable number.

331066121 is a deficient number, since it is larger than the sum of its proper divisors (10919743).

331066121 is a wasteful number, since it uses less digits than its factorization.

331066121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51931.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 331066121 is about 18195.2224773428. Note that the first 3 decimals coincide. The cubic root of 331066121 is about 691.7856995376.

The spelling of 331066121 in words is "three hundred thirty-one million, sixty-six thousand, one hundred twenty-one".