131231010023 has 16 divisors (see below), whose sum is σ = 132880619520. Its totient is φ = 129593501856.

The previous prime is 131231010019. The next prime is 131231010091. The reversal of 131231010023 is 320010132131.

It is a cyclic number.

It is not a de Polignac number, because 131231010023 - 2² = 131231010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131231009983 and 131231010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131231010223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29507786 + ... + 29512232.

It is an arithmetic number, because the mean of its divisors is an integer number (8305038720).

Almost surely, 2^131231010023 is an apocalyptic number.

131231010023 is a deficient number, since it is larger than the sum of its proper divisors (1649609497).

131231010023 is a wasteful number, since it uses less digits than its factorization.

131231010023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131231010023 its reverse (320010132131), we get a palindrome (451241142154).

The spelling of 131231010023 in words is "one hundred thirty-one billion, two hundred thirty-one million, ten thousand, twenty-three".