23121427343 has 4 divisors (see below), whose sum is σ = 26424488400. Its totient is φ = 19818366288.

The previous prime is 23121427339. The next prime is 23121427363. The reversal of 23121427343 is 34372412132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23121427343 - 2² = 23121427339 is a prime.

It is a super-3 number, since 3×23121427343³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121427363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651530518 + ... + 1651530531.

It is an arithmetic number, because the mean of its divisors is an integer number (6606122100).

Almost surely, 2^23121427343 is an apocalyptic number.

23121427343 is a deficient number, since it is larger than the sum of its proper divisors (3303061057).

23121427343 is an equidigital number, since it uses as much as digits as its factorization.

23121427343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303061056.

The product of its digits is 24192, while the sum is 32.

Adding to 23121427343 its reverse (34372412132), we get a palindrome (57493839475).

The spelling of 23121427343 in words is "twenty-three billion, one hundred twenty-one million, four hundred twenty-seven thousand, three hundred forty-three".