231202401 has 4 divisors (see below), whose sum is σ = 308269872. Its totient is φ = 154134932.

The previous prime is 231202399. The next prime is 231202409. The reversal of 231202401 is 104202132.

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 231202401 - 2¹ = 231202399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231202409) 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, 38533731 + ... + 38533736.

It is an arithmetic number, because the mean of its divisors is an integer number (77067468).

Almost surely, 2^231202401 is an apocalyptic number.

It is an amenable number.

231202401 is a deficient number, since it is larger than the sum of its proper divisors (77067471).

231202401 is an equidigital number, since it uses as much as digits as its factorization.

231202401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77067470.

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

The square root of 231202401 is about 15205.3411997232. The cubic root of 231202401 is about 613.7583966342.

Adding to 231202401 its reverse (104202132), we get a palindrome (335404533).

The spelling of 231202401 in words is "two hundred thirty-one million, two hundred two thousand, four hundred one".