331003121 has 8 divisors (see below), whose sum is σ = 340000320. Its totient is φ = 322065072.

The previous prime is 331003111. The next prime is 331003163. The reversal of 331003121 is 121300133.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331003121 is a prime.

It is a super-2 number, since 2×331003121² = 219126132223481282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331003096 and 331003105.

It is not an unprimeable number, because it can be changed into a prime (331003111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3326 + ... + 25943.

It is an arithmetic number, because the mean of its divisors is an integer number (42500040).

Almost surely, 2^331003121 is an apocalyptic number.

It is an amenable number.

331003121 is a deficient number, since it is larger than the sum of its proper divisors (8997199).

331003121 is a wasteful number, since it uses less digits than its factorization.

331003121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29575.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 331003121 is about 18193.4911712953. The cubic root of 331003121 is about 691.7418157925.

Adding to 331003121 its reverse (121300133), we get a palindrome (452303254).

The spelling of 331003121 in words is "three hundred thirty-one million, three thousand, one hundred twenty-one".