23431220101121 has 16 divisors (see below), whose sum is σ = 27670924608000. Its totient is φ = 19829676301344.

The previous prime is 23431220101043. The next prime is 23431220101139. The reversal of 23431220101121 is 12110102213432.

It is not a de Polignac number, because 23431220101121 - 2¹⁸ = 23431219838977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23431220101151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432331100 + ... + 432385293.

It is an arithmetic number, because the mean of its divisors is an integer number (1729432788000).

Almost surely, 2^{23431220101121} is an apocalyptic number.

It is an amenable number.

23431220101121 is a deficient number, since it is larger than the sum of its proper divisors (4239704506879).

23431220101121 is an frugal number, since it uses more digits than its factorization.

23431220101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864716493 (or 864716479 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 23431220101121 its reverse (12110102213432), we get a palindrome (35541322314553).

The spelling of 23431220101121 in words is "twenty-three trillion, four hundred thirty-one billion, two hundred twenty million, one hundred one thousand, one hundred twenty-one".