3131131330 has 32 divisors (see below), whose sum is σ = 5720199408. Its totient is φ = 1233792000.

The previous prime is 3131131313. The next prime is 3131131369. The reversal of 3131131330 is 331311313.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 765573561 + 2365557769 = 27669^2 + 48637^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3131131298 and 3131131307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743230 + ... + 747430.

Almost surely, 2^3131131330 is an apocalyptic number.

3131131330 is a deficient number, since it is larger than the sum of its proper divisors (2589068078).

3131131330 is a wasteful number, since it uses less digits than its factorization.

3131131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 3131131330 is about 55956.5128470315. The cubic root of 3131131330 is about 1462.9644107225.

Adding to 3131131330 its reverse (331311313), we get a palindrome (3462442643).

The spelling of 3131131330 in words is "three billion, one hundred thirty-one million, one hundred thirty-one thousand, three hundred thirty".