3131321332 has 6 divisors (see below), whose sum is σ = 5479812338. Its totient is φ = 1565660664.

The previous prime is 3131321327. The next prime is 3131321363. The reversal of 3131321332 is 2331231313.

It can be written as a sum of positive squares in only one way, i.e., 1606887396 + 1524433936 = 40086^2 + 39044^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391415163 + ... + 391415170.

Almost surely, 2^3131321332 is an apocalyptic number.

It is an amenable number.

3131321332 is a deficient number, since it is larger than the sum of its proper divisors (2348491006).

3131321332 is a wasteful number, since it uses less digits than its factorization.

3131321332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782830337 (or 782830335 counting only the distinct ones).

The product of its digits is 972, while the sum is 22.

The square root of 3131321332 is about 55958.2105861151. The cubic root of 3131321332 is about 1462.9940017885.

Adding to 3131321332 its reverse (2331231313), we get a palindrome (5462552645).

The spelling of 3131321332 in words is "three billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred thirty-two".