23143314421 has 2 divisors, whose sum is σ = 23143314422. Its totient is φ = 23143314420.

The previous prime is 23143314391. The next prime is 23143314443. The reversal of 23143314421 is 12441334132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22816102500 + 327211921 = 151050^2 + 18089^2 .

It is a cyclic number.

It is not a de Polignac number, because 23143314421 - 2⁹ = 23143313909 is a prime.

It is a super-2 number, since 2×23143314421² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23143314421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23143314451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571657210 + 11571657211.

It is an arithmetic number, because the mean of its divisors is an integer number (11571657211).

Almost surely, 2^23143314421 is an apocalyptic number.

It is an amenable number.

23143314421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23143314421 is an equidigital number, since it uses as much as digits as its factorization.

23143314421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

Adding to 23143314421 its reverse (12441334132), we get a palindrome (35584648553).

The spelling of 23143314421 in words is "twenty-three billion, one hundred forty-three million, three hundred fourteen thousand, four hundred twenty-one".