23121405431003 has 16 divisors (see below), whose sum is σ = 25258705933536. Its totient is φ = 20989999511040.

The previous prime is 23121405430979. The next prime is 23121405431017. The reversal of 23121405431003 is 30013450412132.

It is a cyclic number.

It is not a de Polignac number, because 23121405431003 - 2²⁴ = 23121388653787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23121405431603) 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, 425836325 + ... + 425890617.

It is an arithmetic number, because the mean of its divisors is an integer number (1578669120846).

Almost surely, 2^{23121405431003} is an apocalyptic number.

23121405431003 is a deficient number, since it is larger than the sum of its proper divisors (2137300502533).

23121405431003 is a wasteful number, since it uses less digits than its factorization.

23121405431003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107854.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 23121405431003 its reverse (30013450412132), we get a palindrome (53134855843135).

The spelling of 23121405431003 in words is "twenty-three trillion, one hundred twenty-one billion, four hundred five million, four hundred thirty-one thousand, three".