231203201533 has 2 divisors, whose sum is σ = 231203201534. Its totient is φ = 231203201532.

The previous prime is 231203201519. The next prime is 231203201633. The reversal of 231203201533 is 335102302132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212680535929 + 18522665604 = 461173^2 + 136098^2 .

It is a cyclic number.

It is not a de Polignac number, because 231203201533 - 2¹³ = 231203193341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231203201498 and 231203201507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231203201633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115601600766 + 115601600767.

It is an arithmetic number, because the mean of its divisors is an integer number (115601600767).

Almost surely, 2^231203201533 is an apocalyptic number.

It is an amenable number.

231203201533 is a deficient number, since it is larger than the sum of its proper divisors (1).

231203201533 is an equidigital number, since it uses as much as digits as its factorization.

231203201533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 231203201533 its reverse (335102302132), we get a palindrome (566305503665).

The spelling of 231203201533 in words is "two hundred thirty-one billion, two hundred three million, two hundred one thousand, five hundred thirty-three".