31103313203211 has 16 divisors (see below), whose sum is σ = 43303276698624. Its totient is φ = 19820658497024.

The previous prime is 31103313203177. The next prime is 31103313203219. The reversal of 31103313203211 is 11230231330113.

It is a cyclic number.

It is not a de Polignac number, because 31103313203211 - 2⁹ = 31103313202699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31103313203219) 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 15 ways as a sum of consecutive naturals, for example, 151468566 + ... + 151673771.

It is an arithmetic number, because the mean of its divisors is an integer number (2706454793664).

Almost surely, 2^{31103313203211} is an apocalyptic number.

31103313203211 is a deficient number, since it is larger than the sum of its proper divisors (12199963495413).

31103313203211 is a wasteful number, since it uses less digits than its factorization.

31103313203211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303143850.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 31103313203211 its reverse (11230231330113), we get a palindrome (42333544533324).

The spelling of 31103313203211 in words is "thirty-one trillion, one hundred three billion, three hundred thirteen million, two hundred three thousand, two hundred eleven".