231312202201 has 4 divisors (see below), whose sum is σ = 231313982004. Its totient is φ = 231310422400.

The previous prime is 231312202153. The next prime is 231312202241. The reversal of 231312202201 is 102202213132.

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 88624694601 + 142687507600 = 297699^2 + 377740^2 .

It is a cyclic number.

It is not a de Polignac number, because 231312202201 - 2¹⁷ = 231312071129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231312202241) 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, 678160 + ... + 960481.

It is an arithmetic number, because the mean of its divisors is an integer number (57828495501).

Almost surely, 2^231312202201 is an apocalyptic number.

It is an amenable number.

231312202201 is a deficient number, since it is larger than the sum of its proper divisors (1779803).

231312202201 is a wasteful number, since it uses less digits than its factorization.

231312202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779802.

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

Adding to 231312202201 its reverse (102202213132), we get a palindrome (333514415333).

The spelling of 231312202201 in words is "two hundred thirty-one billion, three hundred twelve million, two hundred two thousand, two hundred one".