23311321031421 has 16 divisors (see below), whose sum is σ = 34557528270720. Its totient is φ = 15530873653440.

The previous prime is 23311321031381. The next prime is 23311321031441. The reversal of 23311321031421 is 12413012311332.

23311321031421 is a `hidden beast` number, since 2 + 3 + 3 + 1 + 1 + 321 + 0 + 314 + 21 = 666.

It is not a de Polignac number, because 23311321031421 - 2⁹ = 23311321030909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311321031441) 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, 277930465 + ... + 278014326.

It is an arithmetic number, because the mean of its divisors is an integer number (2159845516920).

Almost surely, 2^{23311321031421} is an apocalyptic number.

It is an amenable number.

23311321031421 is a deficient number, since it is larger than the sum of its proper divisors (11246207239299).

23311321031421 is a wasteful number, since it uses less digits than its factorization.

23311321031421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555946353 (or 555946347 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 23311321031421 its reverse (12413012311332), we get a palindrome (35724333342753).

The spelling of 23311321031421 in words is "twenty-three trillion, three hundred eleven billion, three hundred twenty-one million, thirty-one thousand, four hundred twenty-one".