31103132221103 has 4 divisors (see below), whose sum is σ = 31103384516328. Its totient is φ = 31102879925880.

The previous prime is 31103132221097. The next prime is 31103132221267. The reversal of 31103132221103 is 30112223130113.

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 31103132221103 - 2¹⁴ = 31103132204719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103132224103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125962601 + ... + 126209282.

It is an arithmetic number, because the mean of its divisors is an integer number (7775846129082).

Almost surely, 2^{31103132221103} is an apocalyptic number.

31103132221103 is a deficient number, since it is larger than the sum of its proper divisors (252295225).

31103132221103 is a wasteful number, since it uses less digits than its factorization.

31103132221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252295224.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31103132221103 its reverse (30112223130113), we get a palindrome (61215355351216).

The spelling of 31103132221103 in words is "thirty-one trillion, one hundred three billion, one hundred thirty-two million, two hundred twenty-one thousand, one hundred three".