331134121 has 4 divisors (see below), whose sum is σ = 332072532. Its totient is φ = 330195712.

The previous prime is 331134101. The next prime is 331134203. The reversal of 331134121 is 121431133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121431133 = 211 ⋅575503.

It can be written as a sum of positive squares in 2 ways, for example, as 98724096 + 232410025 = 9936^2 + 15245^2 .

It is a cyclic number.

It is not a de Polignac number, because 331134121 - 2⁷ = 331133993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331134101) 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, 468676 + ... + 469381.

It is an arithmetic number, because the mean of its divisors is an integer number (83018133).

Almost surely, 2^331134121 is an apocalyptic number.

It is an amenable number.

331134121 is a deficient number, since it is larger than the sum of its proper divisors (938411).

331134121 is an equidigital number, since it uses as much as digits as its factorization.

331134121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938410.

The product of its digits is 216, while the sum is 19.

The square root of 331134121 is about 18197.0910037841. The cubic root of 331134121 is about 691.8330598727.

Adding to 331134121 its reverse (121431133), we get a palindrome (452565254).

The spelling of 331134121 in words is "three hundred thirty-one million, one hundred thirty-four thousand, one hundred twenty-one".