235513681 has 8 divisors (see below), whose sum is σ = 253803200. Its totient is φ = 217248912.

The previous prime is 235513679. The next prime is 235513703. The reversal of 235513681 is 186315532.

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 235513681 - 2¹ = 235513679 is a prime.

It is a super-2 number, since 2×235513681² = 110933387876339522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235513601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16756 + ... + 27418.

It is an arithmetic number, because the mean of its divisors is an integer number (31725400).

Almost surely, 2^235513681 is an apocalyptic number.

It is an amenable number.

235513681 is a deficient number, since it is larger than the sum of its proper divisors (18289519).

235513681 is a wasteful number, since it uses less digits than its factorization.

235513681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12375.

The product of its digits is 21600, while the sum is 34.

The square root of 235513681 is about 15346.4549978163. The cubic root of 235513681 is about 617.5498872970.

The spelling of 235513681 in words is "two hundred thirty-five million, five hundred thirteen thousand, six hundred eighty-one".