3112312212405 has 192 divisors, whose sum is σ = 6312905703936. Its totient is φ = 1401753600000.

The previous prime is 3112312212391. The next prime is 3112312212407. The reversal of 3112312212405 is 5042122132113.

It is a happy number.

3112312212405 is a `hidden beast` number, since 3 + 1 + 1 + 2 + 31 + 221 + 2 + 405 = 666.

It is not a de Polignac number, because 3112312212405 - 2⁴ = 3112312212389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112312212407) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 199486605 + ... + 199502205.

It is an arithmetic number, because the mean of its divisors is an integer number (32879717208).

Almost surely, 2^{3112312212405} is an apocalyptic number.

It is an amenable number.

3112312212405 is an abundant number, since it is smaller than the sum of its proper divisors (3200593491531).

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

3112312212405 is a wasteful number, since it uses less digits than its factorization.

3112312212405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15948 (or 15945 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 3112312212405 its reverse (5042122132113), we get a palindrome (8154434344518).

The spelling of 3112312212405 in words is "three trillion, one hundred twelve billion, three hundred twelve million, two hundred twelve thousand, four hundred five".