3131101321212 has 12 divisors (see below), whose sum is σ = 7305903082856. Its totient is φ = 1043700440400.

The previous prime is 3131101321211. The next prime is 3131101321213. The reversal of 3131101321212 is 2121231011313.

It is an interprime number because it is at equal distance from previous prime (3131101321211) and next prime (3131101321213).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×3131101321212² (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 (3131101321211) 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, 130462555039 + ... + 130462555062.

Almost surely, 2^{3131101321212} is an apocalyptic number.

It is an amenable number.

3131101321212 is an abundant number, since it is smaller than the sum of its proper divisors (4174801761644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131101321212 is a wasteful number, since it uses less digits than its factorization.

3131101321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260925110108 (or 260925110106 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 3131101321212 its reverse (2121231011313), we get a palindrome (5252332332525).

The spelling of 3131101321212 in words is "three trillion, one hundred thirty-one billion, one hundred one million, three hundred twenty-one thousand, two hundred twelve".