131123120101 has 4 divisors (see below), whose sum is σ = 131633327052. Its totient is φ = 130612913152.

The previous prime is 131123120081. The next prime is 131123120111. The reversal of 131123120101 is 101021321131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101021321131 = 277247 ⋅364373.

It can be written as a sum of positive squares in 2 ways, for example, as 87692976900 + 43430143201 = 296130^2 + 208399^2 .

It is a cyclic number.

It is not a de Polignac number, because 131123120101 - 2¹¹ = 131123118053 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 (131123120111) 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 3 ways as a sum of consecutive naturals, for example, 255103090 + ... + 255103603.

It is an arithmetic number, because the mean of its divisors is an integer number (32908331763).

Almost surely, 2^131123120101 is an apocalyptic number.

It is an amenable number.

131123120101 is a deficient number, since it is larger than the sum of its proper divisors (510206951).

131123120101 is an equidigital number, since it uses as much as digits as its factorization.

131123120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510206950.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 131123120101 its reverse (101021321131), we get a palindrome (232144441232).

The spelling of 131123120101 in words is "one hundred thirty-one billion, one hundred twenty-three million, one hundred twenty thousand, one hundred one".