234320635513 has 16 divisors (see below), whose sum is σ = 254021597440. Its totient is φ = 215988061680.

The previous prime is 234320635489. The next prime is 234320635543. The reversal of 234320635513 is 315536023432.

It is a de Polignac number, because none of the positive numbers 2^k-234320635513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (234320635543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207873 + ... + 715438.

It is an arithmetic number, because the mean of its divisors is an integer number (15876349840).

Almost surely, 2^234320635513 is an apocalyptic number.

It is an amenable number.

234320635513 is a deficient number, since it is larger than the sum of its proper divisors (19700961927).

234320635513 is an frugal number, since it uses more digits than its factorization.

234320635513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923405 (or 923367 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 37.

Adding to 234320635513 its reverse (315536023432), we get a palindrome (549856658945).

The spelling of 234320635513 in words is "two hundred thirty-four billion, three hundred twenty million, six hundred thirty-five thousand, five hundred thirteen".