331220141 has 8 divisors (see below), whose sum is σ = 398460480. Its totient is φ = 268960608.

The previous prime is 331220137. The next prime is 331220143. The reversal of 331220141 is 141022133.

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

It is not a de Polignac number, because 331220141 - 2² = 331220137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331220143) 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, 1245056 + ... + 1245321.

It is an arithmetic number, because the mean of its divisors is an integer number (49807560).

Almost surely, 2^331220141 is an apocalyptic number.

It is an amenable number.

331220141 is a deficient number, since it is larger than the sum of its proper divisors (67240339).

331220141 is a wasteful number, since it uses less digits than its factorization.

331220141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490403.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 331220141 is about 18199.4544148994. The cubic root of 331220141 is about 691.8929614086.

Adding to 331220141 its reverse (141022133), we get a palindrome (472242274).

The spelling of 331220141 in words is "three hundred thirty-one million, two hundred twenty thousand, one hundred forty-one".