23144353303421 has 16 divisors (see below), whose sum is σ = 26617861987968. Its totient is φ = 19712682547200.

The previous prime is 23144353303321. The next prime is 23144353303433. The reversal of 23144353303421 is 12430335344132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23144353303421 is a prime.

It is a super-2 number, since 2×23144353303421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144353303321) 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, 4344161 + ... + 8072201.

It is an arithmetic number, because the mean of its divisors is an integer number (1663616374248).

Almost surely, 2^{23144353303421} is an apocalyptic number.

It is an amenable number.

23144353303421 is a deficient number, since it is larger than the sum of its proper divisors (3473508684547).

23144353303421 is a wasteful number, since it uses less digits than its factorization.

23144353303421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733652.

The product of its (nonzero) digits is 311040, while the sum is 38.

Adding to 23144353303421 its reverse (12430335344132), we get a palindrome (35574688647553).

The spelling of 23144353303421 in words is "twenty-three trillion, one hundred forty-four billion, three hundred fifty-three million, three hundred three thousand, four hundred twenty-one".