231320221201 has 8 divisors (see below), whose sum is σ = 233929074600. Its totient is φ = 228711584640.

The previous prime is 231320221163. The next prime is 231320221219. The reversal of 231320221201 is 102122023132.

It can be written as a sum of positive squares in 4 ways, for example, as 122726904976 + 108593316225 = 350324^2 + 329535^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 231320221201 - 2¹³ = 231320213009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231320221271) 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, 3156111 + ... + 3228571.

It is an arithmetic number, because the mean of its divisors is an integer number (29241134325).

Almost surely, 2^231320221201 is an apocalyptic number.

It is an amenable number.

231320221201 is a deficient number, since it is larger than the sum of its proper divisors (2608853399).

231320221201 is an equidigital number, since it uses as much as digits as its factorization.

231320221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108419.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231320221201 its reverse (102122023132), we get a palindrome (333442244333).

The spelling of 231320221201 in words is "two hundred thirty-one billion, three hundred twenty million, two hundred twenty-one thousand, two hundred one".