31122132211312 has 20 divisors (see below), whose sum is σ = 62244264423616. Its totient is φ = 15059096231040.

The previous prime is 31122132211309. The next prime is 31122132211351. The reversal of 31122132211312 is 21311223122113.

31122132211312 is an admirable number.

It is a super-2 number, since 2×31122132211312² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31373116653 + ... + 31373117644.

Almost surely, 2^{31122132211312} is an apocalyptic number.

It is an amenable number.

31122132211312 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31122132211312 is a wasteful number, since it uses less digits than its factorization.

31122132211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62746234336 (or 62746234330 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 31122132211312 its reverse (21311223122113), we get a palindrome (52433355333425).

The spelling of 31122132211312 in words is "thirty-one trillion, one hundred twenty-two billion, one hundred thirty-two million, two hundred eleven thousand, three hundred twelve".