23140323423021 has 12 divisors (see below), whose sum is σ = 35891113880832. Its totient is φ = 13223041955928.

The previous prime is 23140323423013. The next prime is 23140323423047. The reversal of 23140323423021 is 12032432304132.

It is a happy number.

It is not a de Polignac number, because 23140323423021 - 2³ = 23140323423013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23140323423021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23140323423001) 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 11 ways as a sum of consecutive naturals, for example, 78708582925 + ... + 78708583218.

It is an arithmetic number, because the mean of its divisors is an integer number (2990926156736).

Almost surely, 2^{23140323423021} is an apocalyptic number.

23140323423021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23140323423021 is a deficient number, since it is larger than the sum of its proper divisors (12750790457811).

23140323423021 is a wasteful number, since it uses less digits than its factorization.

23140323423021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157417166160 (or 157417166153 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 23140323423021 its reverse (12032432304132), we get a palindrome (35172755727153).

The spelling of 23140323423021 in words is "twenty-three trillion, one hundred forty billion, three hundred twenty-three million, four hundred twenty-three thousand, twenty-one".