234020511505 has 32 divisors (see below), whose sum is σ = 310169502720. Its totient is φ = 168078732480.

The previous prime is 234020511469. The next prime is 234020511509. The reversal of 234020511505 is 505115020432.

It is not a de Polignac number, because 234020511505 - 2³¹ = 231873027857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (234020511509) 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, 13243366 + ... + 13261024.

It is an arithmetic number, because the mean of its divisors is an integer number (9692796960).

Almost surely, 2^234020511505 is an apocalyptic number.

It is an amenable number.

234020511505 is a deficient number, since it is larger than the sum of its proper divisors (76148991215).

234020511505 is a wasteful number, since it uses less digits than its factorization.

234020511505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20661.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 234020511505 its reverse (505115020432), we get a palindrome (739135531937).

The spelling of 234020511505 in words is "two hundred thirty-four billion, twenty million, five hundred eleven thousand, five hundred five".