235206681 has 8 divisors (see below), whose sum is σ = 330114720. Its totient is φ = 148551552.

The previous prime is 235206661. The next prime is 235206691. The reversal of 235206681 is 186602532.

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

It is not a de Polignac number, because 235206681 - 2¹¹ = 235204633 is a prime.

It is a super-2 number, since 2×235206681² = 110644365574071522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (235206661) 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, 2063160 + ... + 2063273.

It is an arithmetic number, because the mean of its divisors is an integer number (41264340).

Almost surely, 2^235206681 is an apocalyptic number.

It is an amenable number.

235206681 is a deficient number, since it is larger than the sum of its proper divisors (94908039).

235206681 is a wasteful number, since it uses less digits than its factorization.

235206681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126455.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 235206681 is about 15336.4494261221. The cubic root of 235206681 is about 617.2814382734.

The spelling of 235206681 in words is "two hundred thirty-five million, two hundred six thousand, six hundred eighty-one".