231402201 has 4 divisors (see below), whose sum is σ = 308536272. Its totient is φ = 154268132.

The previous prime is 231402173. The next prime is 231402209. The reversal of 231402201 is 102204132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231402201 - 2¹¹ = 231400153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231402209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38567031 + ... + 38567036.

It is an arithmetic number, because the mean of its divisors is an integer number (77134068).

Almost surely, 2^231402201 is an apocalyptic number.

It is an amenable number.

231402201 is a deficient number, since it is larger than the sum of its proper divisors (77134071).

231402201 is an equidigital number, since it uses as much as digits as its factorization.

231402201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77134070.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 231402201 is about 15211.9098406479. The cubic root of 231402201 is about 613.9351445395.

Adding to 231402201 its reverse (102204132), we get a palindrome (333606333).

The spelling of 231402201 in words is "two hundred thirty-one million, four hundred two thousand, two hundred one".