331121101 has 8 divisors (see below), whose sum is σ = 342857880. Its totient is φ = 319405632.

The previous prime is 331121099. The next prime is 331121111. The reversal of 331121101 is 101121133.

It can be written as a sum of positive squares in 4 ways, for example, as 72233001 + 258888100 = 8499^2 + 16090^2 .

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 331121101 - 2¹ = 331121099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331121111) 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, 30471 + ... + 39883.

It is an arithmetic number, because the mean of its divisors is an integer number (42857235).

Almost surely, 2^331121101 is an apocalyptic number.

It is an amenable number.

331121101 is a deficient number, since it is larger than the sum of its proper divisors (11736779).

331121101 is a wasteful number, since it uses less digits than its factorization.

331121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10655.

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

The square root of 331121101 is about 18196.7332507788. The cubic root of 331121101 is about 691.8239922634.

Adding to 331121101 its reverse (101121133), we get a palindrome (432242234).

The spelling of 331121101 in words is "three hundred thirty-one million, one hundred twenty-one thousand, one hundred one".