331011121 has 8 divisors (see below), whose sum is σ = 386019200. Its totient is φ = 283723524.

The previous prime is 331011089. The next prime is 331011137. The reversal of 331011121 is 121110133.

It is not a de Polignac number, because 331011121 - 2⁵ = 331011089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331015121) 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, 482181 + ... + 482866.

It is an arithmetic number, because the mean of its divisors is an integer number (48252400).

Almost surely, 2^331011121 is an apocalyptic number.

It is an amenable number.

331011121 is a deficient number, since it is larger than the sum of its proper divisors (55008079).

331011121 is an frugal number, since it uses more digits than its factorization.

331011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965068 (or 965054 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 331011121 is about 18193.7110288143. The cubic root of 331011121 is about 691.7473886402.

Adding to 331011121 its reverse (121110133), we get a palindrome (452121254).

The spelling of 331011121 in words is "three hundred thirty-one million, eleven thousand, one hundred twenty-one".