243115151423 has 2 divisors, whose sum is σ = 243115151424. Its totient is φ = 243115151422.

The previous prime is 243115151401. The next prime is 243115151443. The reversal of 243115151423 is 324151511342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243115151423 - 2¹⁶ = 243115085887 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243115151423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243115151443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121557575711 + 121557575712.

It is an arithmetic number, because the mean of its divisors is an integer number (121557575712).

Almost surely, 2^243115151423 is an apocalyptic number.

243115151423 is a deficient number, since it is larger than the sum of its proper divisors (1).

243115151423 is an equidigital number, since it uses as much as digits as its factorization.

243115151423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

Adding to 243115151423 its reverse (324151511342), we get a palindrome (567266662765).

The spelling of 243115151423 in words is "two hundred forty-three billion, one hundred fifteen million, one hundred fifty-one thousand, four hundred twenty-three".