31211030311201 has 6 divisors (see below), whose sum is σ = 33796559449590. Its totient is φ = 28810181825568.

The previous prime is 31211030311163. The next prime is 31211030311259. The reversal of 31211030311201 is 10211303011213.

It can be written as a sum of positive squares in 3 ways, for example, as 220265016976 + 30990765294225 = 469324^2 + 5566935^2 .

It is not a de Polignac number, because 31211030311201 - 2¹¹ = 31211030309153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31211030311291) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 92340326196 + ... + 92340326533.

It is an arithmetic number, because the mean of its divisors is an integer number (5632759908265).

Almost surely, 2^{31211030311201} is an apocalyptic number.

It is an amenable number.

31211030311201 is a deficient number, since it is larger than the sum of its proper divisors (2585529138389).

31211030311201 is a wasteful number, since it uses less digits than its factorization.

31211030311201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184680652755 (or 184680652742 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31211030311201 its reverse (10211303011213), we get a palindrome (41422333322414).

The spelling of 31211030311201 in words is "thirty-one trillion, two hundred eleven billion, thirty million, three hundred eleven thousand, two hundred one".