31213211231214 has 144 divisors (see below), whose sum is σ = 68610198056400. Its totient is φ = 10255358066688.

The previous prime is 31213211231143. The next prime is 31213211231287. The reversal of 31213211231214 is 41213211231213.

31213211231214 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 3 + 211 + 231 + 214 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40589351022 + ... + 40589351790.

It is an arithmetic number, because the mean of its divisors is an integer number (476459708725).

Almost surely, 2^{31213211231214} is an apocalyptic number.

31213211231214 is an abundant number, since it is smaller than the sum of its proper divisors (37396986825186).

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

31213211231214 is a wasteful number, since it uses less digits than its factorization.

31213211231214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747 (or 1607 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

Adding to 31213211231214 its reverse (41213211231213), we get a palindrome (72426422462427).

Subtracting 31213211231214 from its reverse (41213211231213), we obtain a palindrome (9999999999999).

The spelling of 31213211231214 in words is "thirty-one trillion, two hundred thirteen billion, two hundred eleven million, two hundred thirty-one thousand, two hundred fourteen".