243320511513 has 8 divisors (see below), whose sum is σ = 324486282528. Its totient is φ = 162184207424.

The previous prime is 243320511493. The next prime is 243320511557. The reversal of 243320511513 is 315115023342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243320511513 - 2⁵ = 243320511481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243320511013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7347456 + ... + 7380497.

It is an arithmetic number, because the mean of its divisors is an integer number (40560785316).

Almost surely, 2^243320511513 is an apocalyptic number.

It is an amenable number.

243320511513 is a deficient number, since it is larger than the sum of its proper divisors (81165771015).

243320511513 is a wasteful number, since it uses less digits than its factorization.

243320511513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14733463.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 243320511513 its reverse (315115023342), we get a palindrome (558435534855).

The spelling of 243320511513 in words is "two hundred forty-three billion, three hundred twenty million, five hundred eleven thousand, five hundred thirteen".