31211200211214 has 16 divisors (see below), whose sum is σ = 62607630101328. Its totient is φ = 10372861790592.

The previous prime is 31211200211197. The next prime is 31211200211267. The reversal of 31211200211214 is 41211200211213.

It is a super-2 number, since 2×31211200211214² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7717901097 + ... + 7717905140.

It is an arithmetic number, because the mean of its divisors is an integer number (3912976881333).

Almost surely, 2^{31211200211214} is an apocalyptic number.

31211200211214 is an abundant number, since it is smaller than the sum of its proper divisors (31396429890114).

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

31211200211214 is a wasteful number, since it uses less digits than its factorization.

31211200211214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15435806579.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 31211200211214 its reverse (41211200211213), we get a palindrome (72422400422427).

Subtracting 31211200211214 from its reverse (41211200211213), we obtain a palindrome (9999999999999).

The spelling of 31211200211214 in words is "thirty-one trillion, two hundred eleven billion, two hundred million, two hundred eleven thousand, two hundred fourteen".