103131121112111 has 4 divisors (see below), whose sum is σ = 103333736281800. Its totient is φ = 102928505942424.

The previous prime is 103131121112083. The next prime is 103131121112171. The reversal of 103131121112111 is 111211121131301.

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 103131121112111 - 2¹⁴ = 103131121095727 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 (103131121112171) 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, 101307584081 + ... + 101307585098.

It is an arithmetic number, because the mean of its divisors is an integer number (25833434070450).

Almost surely, 2^{103131121112111} is an apocalyptic number.

103131121112111 is a deficient number, since it is larger than the sum of its proper divisors (202615169689).

103131121112111 is an equidigital number, since it uses as much as digits as its factorization.

103131121112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202615169688.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 103131121112111 its reverse (111211121131301), we get a palindrome (214342242243412).

The spelling of 103131121112111 in words is "one hundred three trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred twelve thousand, one hundred eleven".