23140123423 has 2 divisors, whose sum is σ = 23140123424. Its totient is φ = 23140123422.

The previous prime is 23140123421. The next prime is 23140123463. The reversal of 23140123423 is 32432104132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23140123423 - 2¹ = 23140123421 is a prime.

Together with 23140123421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23140123421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11570061711 + 11570061712.

It is an arithmetic number, because the mean of its divisors is an integer number (11570061712).

Almost surely, 2^23140123423 is an apocalyptic number.

23140123423 is a deficient number, since it is larger than the sum of its proper divisors (1).

23140123423 is an equidigital number, since it uses as much as digits as its factorization.

23140123423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 23140123423 its reverse (32432104132), we get a palindrome (55572227555).

The spelling of 23140123423 in words is "twenty-three billion, one hundred forty million, one hundred twenty-three thousand, four hundred twenty-three".