235630809 has 8 divisors (see below), whose sum is σ = 349082720. Its totient is φ = 157087188.

The previous prime is 235630807. The next prime is 235630823. The reversal of 235630809 is 908036532.

235630809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 235630809 - 2¹ = 235630807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235630807) 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, 4363507 + ... + 4363560.

It is an arithmetic number, because the mean of its divisors is an integer number (43635340).

Almost surely, 2^235630809 is an apocalyptic number.

It is an amenable number.

235630809 is a deficient number, since it is larger than the sum of its proper divisors (113451911).

235630809 is an equidigital number, since it uses as much as digits as its factorization.

235630809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8727076 (or 8727070 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 235630809 is about 15350.2706490798. The cubic root of 235630809 is about 617.6522456755.

The spelling of 235630809 in words is "two hundred thirty-five million, six hundred thirty thousand, eight hundred nine".