3121123331 has 12 divisors (see below), whose sum is σ = 3324301200. Its totient is φ = 2929689648.

The previous prime is 3121123303. The next prime is 3121123333. The reversal of 3121123331 is 1333211213.

It is not a de Polignac number, because 3121123331 - 2³⁰ = 2047381507 is a prime.

It is a super-2 number, since 2×3121123331² = 19482821694625071122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121123333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311 + ... + 79008.

It is an arithmetic number, because the mean of its divisors is an integer number (277025100).

Almost surely, 2^3121123331 is an apocalyptic number.

3121123331 is a deficient number, since it is larger than the sum of its proper divisors (203177869).

3121123331 is a wasteful number, since it uses less digits than its factorization.

3121123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79466 (or 79447 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 3121123331 is about 55867.0146956144. The cubic root of 3121123331 is about 1461.4040616669.

Adding to 3121123331 its reverse (1333211213), we get a palindrome (4454334544).

The spelling of 3121123331 in words is "three billion, one hundred twenty-one million, one hundred twenty-three thousand, three hundred thirty-one".