31400220441321 has 6 divisors (see below), whose sum is σ = 45355873970810. Its totient is φ = 20933480294208.

The previous prime is 31400220441253. The next prime is 31400220441347. The reversal of 31400220441321 is 12314402200413.

31400220441321 is a `hidden beast` number, since 3 + 1 + 4 + 0 + 0 + 220 + 4 + 413 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27856640087721 + 3543580353600 = 5277939^2 + 1882440^2 .

It is not a de Polignac number, because 31400220441321 - 2¹⁵ = 31400220408553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31400220441371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1744456691176 + ... + 1744456691193.

Almost surely, 2^{31400220441321} is an apocalyptic number.

It is an amenable number.

31400220441321 is a deficient number, since it is larger than the sum of its proper divisors (13955653529489).

31400220441321 is a wasteful number, since it uses less digits than its factorization.

31400220441321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488913382375 (or 3488913382372 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 31400220441321 its reverse (12314402200413), we get a palindrome (43714622641734).

The spelling of 31400220441321 in words is "thirty-one trillion, four hundred billion, two hundred twenty million, four hundred forty-one thousand, three hundred twenty-one".