243345332013 has 32 divisors (see below), whose sum is σ = 371474767872. Its totient is φ = 138806136000.

The previous prime is 243345331991. The next prime is 243345332039. The reversal of 243345332013 is 310233543342.

It is not a de Polignac number, because 243345332013 - 2⁶ = 243345331949 is a prime.

It is a super-2 number, since 2×243345332013² (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 (243345332213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38616963 + ... + 38623263.

It is an arithmetic number, because the mean of its divisors is an integer number (11608586496).

Almost surely, 2^243345332013 is an apocalyptic number.

It is an amenable number.

243345332013 is a deficient number, since it is larger than the sum of its proper divisors (128129435859).

243345332013 is a wasteful number, since it uses less digits than its factorization.

243345332013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9305.

The product of its (nonzero) digits is 77760, while the sum is 33.

Adding to 243345332013 its reverse (310233543342), we get a palindrome (553578875355).

The spelling of 243345332013 in words is "two hundred forty-three billion, three hundred forty-five million, three hundred thirty-two thousand, thirteen".