131123233101 has 24 divisors (see below), whose sum is σ = 203391777600. Its totient is φ = 74921310912.

The previous prime is 131123233099. The next prime is 131123233121. The reversal of 131123233101 is 101332321131.

It is a happy number.

It is not a de Polignac number, because 131123233101 - 2¹ = 131123233099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123233121) 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 23 ways as a sum of consecutive naturals, for example, 2177800 + ... + 2237198.

It is an arithmetic number, because the mean of its divisors is an integer number (8474657400).

Almost surely, 2^131123233101 is an apocalyptic number.

It is an amenable number.

131123233101 is a deficient number, since it is larger than the sum of its proper divisors (72268544499).

131123233101 is a wasteful number, since it uses less digits than its factorization.

131123233101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74433 (or 74426 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 131123233101 its reverse (101332321131), we get a palindrome (232455554232).

The spelling of 131123233101 in words is "one hundred thirty-one billion, one hundred twenty-three million, two hundred thirty-three thousand, one hundred one".