31144311041212 has 12 divisors (see below), whose sum is σ = 55770045353176. Its totient is φ = 15210012368880.

The previous prime is 31144311041161. The next prime is 31144311041257. The reversal of 31144311041212 is 21214011344113.

It is a super-2 number, since 2×31144311041212² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90535787739 + ... + 90535788082.

Almost surely, 2^{31144311041212} is an apocalyptic number.

It is an amenable number.

31144311041212 is a deficient number, since it is larger than the sum of its proper divisors (24625734311964).

31144311041212 is a wasteful number, since it uses less digits than its factorization.

31144311041212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181071575868 (or 181071575866 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 31144311041212 its reverse (21214011344113), we get a palindrome (52358322385325).

The spelling of 31144311041212 in words is "thirty-one trillion, one hundred forty-four billion, three hundred eleven million, forty-one thousand, two hundred twelve".