31103022002111 has 4 divisors (see below), whose sum is σ = 31166888577552. Its totient is φ = 31039155426672.

The previous prime is 31103022002089. The next prime is 31103022002123. The reversal of 31103022002111 is 11120022030113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31103022002111 - 2²⁶ = 31102954893247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31103022002111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103022002161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31933286990 + ... + 31933287963.

It is an arithmetic number, because the mean of its divisors is an integer number (7791722144388).

Almost surely, 2^{31103022002111} is an apocalyptic number.

31103022002111 is a deficient number, since it is larger than the sum of its proper divisors (63866575441).

31103022002111 is an equidigital number, since it uses as much as digits as its factorization.

31103022002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63866575440.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31103022002111 its reverse (11120022030113), we get a palindrome (42223044032224).

The spelling of 31103022002111 in words is "thirty-one trillion, one hundred three billion, twenty-two million, two thousand, one hundred eleven".