311211112131103 has 4 divisors (see below), whose sum is σ = 311218770113920. Its totient is φ = 311203454148288.

The previous prime is 311211112131067. The next prime is 311211112131119. The reversal of 311211112131103 is 301131211112113.

It is a happy number.

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 311211112131103 - 2⁹ = 311211112130591 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 (311211112131193) 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, 3828930450 + ... + 3829011727.

It is an arithmetic number, because the mean of its divisors is an integer number (77804692528480).

Almost surely, 2^{311211112131103} is an apocalyptic number.

311211112131103 is a deficient number, since it is larger than the sum of its proper divisors (7657982817).

311211112131103 is an equidigital number, since it uses as much as digits as its factorization.

311211112131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7657982816.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 311211112131103 its reverse (301131211112113), we get a palindrome (612342323243216).

The spelling of 311211112131103 in words is "three hundred eleven trillion, two hundred eleven billion, one hundred twelve million, one hundred thirty-one thousand, one hundred three".