131022123101 has 4 divisors (see below), whose sum is σ = 131022880092. Its totient is φ = 131021366112.

The previous prime is 131022123097. The next prime is 131022123157. The reversal of 131022123101 is 101321220131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33671883001 + 97350240100 = 183499^2 + 312010^2 .

It is a cyclic number.

It is not a de Polignac number, because 131022123101 - 2² = 131022123097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131022123101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131022123191) 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, 23321 + ... + 512433.

It is an arithmetic number, because the mean of its divisors is an integer number (32755720023).

Almost surely, 2^131022123101 is an apocalyptic number.

It is an amenable number.

131022123101 is a deficient number, since it is larger than the sum of its proper divisors (756991).

131022123101 is an equidigital number, since it uses as much as digits as its factorization.

131022123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756990.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131022123101 its reverse (101321220131), we get a palindrome (232343343232).

The spelling of 131022123101 in words is "one hundred thirty-one billion, twenty-two million, one hundred twenty-three thousand, one hundred one".