331001121 has 16 divisors (see below), whose sum is σ = 481798080. Its totient is φ = 200464320.

The previous prime is 331001107. The next prime is 331001131. The reversal of 331001121 is 121100133.

It is not a de Polignac number, because 331001121 - 2¹⁰ = 331000097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331001097 and 331001106.

It is not an unprimeable number, because it can be changed into a prime (331001131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61195 + ... + 66383.

It is an arithmetic number, because the mean of its divisors is an integer number (30112380).

Almost surely, 2^331001121 is an apocalyptic number.

It is an amenable number.

331001121 is a deficient number, since it is larger than the sum of its proper divisors (150796959).

331001121 is a wasteful number, since it uses less digits than its factorization.

331001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136.

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

The square root of 331001121 is about 18193.4362065004. The cubic root of 331001121 is about 691.7404225665.

Adding to 331001121 its reverse (121100133), we get a palindrome (452101254).

The spelling of 331001121 in words is "three hundred thirty-one million, one thousand, one hundred twenty-one".