243402430415 has 4 divisors (see below), whose sum is σ = 292082916504. Its totient is φ = 194721944328.

The previous prime is 243402430399. The next prime is 243402430423. The reversal of 243402430415 is 514034204342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514034204342 = 2 ⋅257017102171.

It is a cyclic number.

It is not a de Polignac number, because 243402430415 - 2⁴ = 243402430399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24340243037 + ... + 24340243046.

It is an arithmetic number, because the mean of its divisors is an integer number (73020729126).

Almost surely, 2^243402430415 is an apocalyptic number.

243402430415 is a deficient number, since it is larger than the sum of its proper divisors (48680486089).

243402430415 is an equidigital number, since it uses as much as digits as its factorization.

243402430415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48680486088.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 243402430415 its reverse (514034204342), we get a palindrome (757436634757).

The spelling of 243402430415 in words is "two hundred forty-three billion, four hundred two million, four hundred thirty thousand, four hundred fifteen".