235132512161 has 4 divisors (see below), whose sum is σ = 240867451524. Its totient is φ = 229397572800.

The previous prime is 235132512101. The next prime is 235132512211. The reversal of 235132512161 is 161215231532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23457985600 + 211674526561 = 153160^2 + 460081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235132512161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (235132512101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2867469620 + ... + 2867469701.

It is an arithmetic number, because the mean of its divisors is an integer number (60216862881).

Almost surely, 2^235132512161 is an apocalyptic number.

It is an amenable number.

235132512161 is a deficient number, since it is larger than the sum of its proper divisors (5734939363).

235132512161 is an equidigital number, since it uses as much as digits as its factorization.

235132512161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734939362.

The product of its digits is 10800, while the sum is 32.

Adding to 235132512161 its reverse (161215231532), we get a palindrome (396347743693).

The spelling of 235132512161 in words is "two hundred thirty-five billion, one hundred thirty-two million, five hundred twelve thousand, one hundred sixty-one".