231420017 has 4 divisors (see below), whose sum is σ = 232040820. Its totient is φ = 230799216.

The previous prime is 231420011. The next prime is 231420047. The reversal of 231420017 is 710024132.

231420017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 100180081 + 131239936 = 10009^2 + 11456^2 .

It is a cyclic number.

It is not a de Polignac number, because 231420017 - 2⁸ = 231419761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231420011) 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, 309842 + ... + 310587.

It is an arithmetic number, because the mean of its divisors is an integer number (58010205).

Almost surely, 2^231420017 is an apocalyptic number.

It is an amenable number.

231420017 is a deficient number, since it is larger than the sum of its proper divisors (620803).

231420017 is an equidigital number, since it uses as much as digits as its factorization.

231420017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620802.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 231420017 is about 15212.4954231710. The cubic root of 231420017 is about 613.9509000621.

Adding to 231420017 its reverse (710024132), we get a palindrome (941444149).

The spelling of 231420017 in words is "two hundred thirty-one million, four hundred twenty thousand, seventeen".