331411121 has 4 divisors (see below), whose sum is σ = 334451700. Its totient is φ = 328370544.

The previous prime is 331411099. The next prime is 331411151. The reversal of 331411121 is 121114133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 176757025 + 154654096 = 13295^2 + 12436^2 .

It is a cyclic number.

It is not a de Polignac number, because 331411121 - 2⁶ = 331411057 is a prime.

It is a super-2 number, since 2×331411121² = 219666662244953282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331411121.

It is not an unprimeable number, because it can be changed into a prime (331411151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520126 + ... + 1520343.

It is an arithmetic number, because the mean of its divisors is an integer number (83612925).

Almost surely, 2^331411121 is an apocalyptic number.

It is an amenable number.

331411121 is a deficient number, since it is larger than the sum of its proper divisors (3040579).

331411121 is a wasteful number, since it uses less digits than its factorization.

331411121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040578.

The product of its digits is 72, while the sum is 17.

The square root of 331411121 is about 18204.7005193714. The cubic root of 331411121 is about 692.0259166177.

Adding to 331411121 its reverse (121114133), we get a palindrome (452525254).

The spelling of 331411121 in words is "three hundred thirty-one million, four hundred eleven thousand, one hundred twenty-one".