243134133405 has 32 divisors (see below), whose sum is σ = 391246547328. Its totient is φ = 128927865600.

The previous prime is 243134133379. The next prime is 243134133409. The reversal of 243134133405 is 504331431342.

It is not a de Polignac number, because 243134133405 - 2⁵ = 243134133373 is a prime.

It is a super-2 number, since 2×243134133405² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243134133409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25356022 + ... + 25365608.

It is an arithmetic number, because the mean of its divisors is an integer number (12226454604).

Almost surely, 2^243134133405 is an apocalyptic number.

It is an amenable number.

243134133405 is a deficient number, since it is larger than the sum of its proper divisors (148112413923).

243134133405 is a wasteful number, since it uses less digits than its factorization.

243134133405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19117.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 243134133405 its reverse (504331431342), we get a palindrome (747465564747).

The spelling of 243134133405 in words is "two hundred forty-three billion, one hundred thirty-four million, one hundred thirty-three thousand, four hundred five".