3121130331 has 24 divisors (see below), whose sum is σ = 4998779760. Its totient is φ = 1860580800.

The previous prime is 3121130321. The next prime is 3121130347. The reversal of 3121130331 is 1330311213.

It is a happy number.

3121130331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3121130331 - 2¹³ = 3121122139 is a prime.

It is a super-2 number, since 2×3121130331² = 19482909086176339122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3121130321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252376 + ... + 264453.

It is an arithmetic number, because the mean of its divisors is an integer number (208282490).

Almost surely, 2^3121130331 is an apocalyptic number.

3121130331 is a deficient number, since it is larger than the sum of its proper divisors (1877649429).

3121130331 is a wasteful number, since it uses less digits than its factorization.

3121130331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516907 (or 516904 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 3121130331 is about 55867.0773443537. The cubic root of 3121130331 is about 1461.4051542031.

Adding to 3121130331 its reverse (1330311213), we get a palindrome (4451441544).

The spelling of 3121130331 in words is "three billion, one hundred twenty-one million, one hundred thirty thousand, three hundred thirty-one".