31103021220211 has 8 divisors (see below), whose sum is σ = 31202919657648. Its totient is φ = 31003158516000.

The previous prime is 31103021220191. The next prime is 31103021220223. The reversal of 31103021220211 is 11202212030113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31103021220211 - 2²³ = 31103012831603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31103021221211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7189120 + ... + 10671901.

It is an arithmetic number, because the mean of its divisors is an integer number (3900364957206).

Almost surely, 2^{31103021220211} is an apocalyptic number.

31103021220211 is a deficient number, since it is larger than the sum of its proper divisors (99898437437).

31103021220211 is a wasteful number, since it uses less digits than its factorization.

31103021220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17866613.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31103021220211 its reverse (11202212030113), we get a palindrome (42305233250324).

The spelling of 31103021220211 in words is "thirty-one trillion, one hundred three billion, twenty-one million, two hundred twenty thousand, two hundred eleven".