31103310321101 has 4 divisors (see below), whose sum is σ = 31106451762204. Its totient is φ = 31100168880000.

The previous prime is 31103310321067. The next prime is 31103310321119. The reversal of 31103310321101 is 10112301330113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13782106805476 + 17321203515625 = 3712426^2 + 4161875^2 .

It is a cyclic number.

It is not a de Polignac number, because 31103310321101 - 2²² = 31103306126797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103310321121) 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, 1570705700 + ... + 1570725501.

It is an arithmetic number, because the mean of its divisors is an integer number (7776612940551).

Almost surely, 2^{31103310321101} is an apocalyptic number.

It is an amenable number.

31103310321101 is a deficient number, since it is larger than the sum of its proper divisors (3141441103).

31103310321101 is an equidigital number, since it uses as much as digits as its factorization.

31103310321101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141441102.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 31103310321101 its reverse (10112301330113), we get a palindrome (41215611651214).

The spelling of 31103310321101 in words is "thirty-one trillion, one hundred three billion, three hundred ten million, three hundred twenty-one thousand, one hundred one".