331110021 has 8 divisors (see below), whose sum is σ = 481614624. Its totient is φ = 200672720.

The previous prime is 331109959. The next prime is 331110049. The reversal of 331110021 is 120011133.

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 331110021 - 2⁹ = 331109509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331109979 and 331110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331010021) 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, 5016786 + ... + 5016851.

It is an arithmetic number, because the mean of its divisors is an integer number (60201828).

Almost surely, 2^331110021 is an apocalyptic number.

It is an amenable number.

331110021 is a deficient number, since it is larger than the sum of its proper divisors (150504603).

331110021 is a wasteful number, since it uses less digits than its factorization.

331110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10033651.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 331110021 is about 18196.4287979812. The cubic root of 331110021 is about 691.8162755546.

Adding to 331110021 its reverse (120011133), we get a palindrome (451121154).

The spelling of 331110021 in words is "three hundred thirty-one million, one hundred ten thousand, twenty-one".