3131323032212 has 12 divisors (see below), whose sum is σ = 5484318039060. Its totient is φ = 1564375021056.

The previous prime is 3131323032209. The next prime is 3131323032217. The reversal of 3131323032212 is 2122303231313.

It can be written as a sum of positive squares in 2 ways, for example, as 1123672081156 + 2007650951056 = 1060034^2 + 1416916^2 .

It is a super-2 number, since 2×3131323032212² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131323032217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321618287 + ... + 321628022.

It is an arithmetic number, because the mean of its divisors is an integer number (457026503255).

Almost surely, 2^{3131323032212} is an apocalyptic number.

It is an amenable number.

3131323032212 is a deficient number, since it is larger than the sum of its proper divisors (2352995006848).

3131323032212 is a wasteful number, since it uses less digits than its factorization.

3131323032212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643247530 (or 643247528 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 3131323032212 its reverse (2122303231313), we get a palindrome (5253626263525).

The spelling of 3131323032212 in words is "three trillion, one hundred thirty-one billion, three hundred twenty-three million, thirty-two thousand, two hundred twelve".