15243403423 has 2 divisors, whose sum is σ = 15243403424. Its totient is φ = 15243403422.

The previous prime is 15243403393. The next prime is 15243403453. The reversal of 15243403423 is 32430434251.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (15243403393) and next prime (15243403453).

It is a cyclic number.

It is not a de Polignac number, because 15243403423 - 2¹³ = 15243395231 is a prime.

It is a super-2 number, since 2×15243403423² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15243403453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7621701711 + 7621701712.

It is an arithmetic number, because the mean of its divisors is an integer number (7621701712).

Almost surely, 2^15243403423 is an apocalyptic number.

15243403423 is a deficient number, since it is larger than the sum of its proper divisors (1).

15243403423 is an equidigital number, since it uses as much as digits as its factorization.

15243403423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 15243403423 its reverse (32430434251), we get a palindrome (47673837674).

The spelling of 15243403423 in words is "fifteen billion, two hundred forty-three million, four hundred three thousand, four hundred twenty-three".