231201020303201 has 16 divisors (see below), whose sum is σ = 250807618376784. Its totient is φ = 211860362625024.

The previous prime is 231201020303137. The next prime is 231201020303251. The reversal of 231201020303201 is 102303020102132.

It can be written as a sum of positive squares in 8 ways, for example, as 114330304726225 + 116870715576976 = 10692535^2 + 10810676^2 .

It is a cyclic number.

It is not a de Polignac number, because 231201020303201 - 2⁶ = 231201020303137 is a prime.

It is a super-2 number, since 2×231201020303201² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231201020303251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117111776 + ... + 119069601.

It is an arithmetic number, because the mean of its divisors is an integer number (15675476148549).

Almost surely, 2^{231201020303201} is an apocalyptic number.

It is an amenable number.

231201020303201 is a deficient number, since it is larger than the sum of its proper divisors (19606598073583).

231201020303201 is a wasteful number, since it uses less digits than its factorization.

231201020303201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236181940.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231201020303201 its reverse (102303020102132), we get a palindrome (333504040405333).

The spelling of 231201020303201 in words is "two hundred thirty-one trillion, two hundred one billion, twenty million, three hundred three thousand, two hundred one".