31320251621214 has 16 divisors (see below), whose sum is σ = 62641325639952. Its totient is φ = 10439946807488.

The previous prime is 31320251621189. The next prime is 31320251621221. The reversal of 31320251621214 is 41212615202313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33770919 + ... + 34685954.

It is an arithmetic number, because the mean of its divisors is an integer number (3915082852497).

Almost surely, 2^{31320251621214} is an apocalyptic number.

31320251621214 is an abundant number, since it is smaller than the sum of its proper divisors (31321074018738).

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

31320251621214 is a wasteful number, since it uses less digits than its factorization.

31320251621214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68533131.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 31320251621214 its reverse (41212615202313), we get a palindrome (72532866823527).

The spelling of 31320251621214 in words is "thirty-one trillion, three hundred twenty billion, two hundred fifty-one million, six hundred twenty-one thousand, two hundred fourteen".