23131335140221 has 16 divisors (see below), whose sum is σ = 29269501032960. Its totient is φ = 17755395839280.

The previous prime is 23131335140203. The next prime is 23131335140233. The reversal of 23131335140221 is 12204153313132.

It is not a de Polignac number, because 23131335140221 - 2⁵ = 23131335140189 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 (23131335143221) 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, 2241837751 + ... + 2241848068.

It is an arithmetic number, because the mean of its divisors is an integer number (1829343814560).

Almost surely, 2^{23131335140221} is an apocalyptic number.

It is an amenable number.

23131335140221 is a deficient number, since it is larger than the sum of its proper divisors (6138165892739).

23131335140221 is a wasteful number, since it uses less digits than its factorization.

23131335140221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483685904.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 23131335140221 its reverse (12204153313132), we get a palindrome (35335488453353).

The spelling of 23131335140221 in words is "twenty-three trillion, one hundred thirty-one billion, three hundred thirty-five million, one hundred forty thousand, two hundred twenty-one".