231550433022533 has 2 divisors, whose sum is σ = 231550433022534. Its totient is φ = 231550433022532.

The previous prime is 231550433022527. The next prime is 231550433022547. The reversal of 231550433022533 is 335220334055132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184730448867364 + 46819984155169 = 13591558^2 + 6842513^2 .

It is a cyclic number.

It is not a de Polignac number, because 231550433022533 - 2²⁰ = 231550431973957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231550433022523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115775216511266 + 115775216511267.

It is an arithmetic number, because the mean of its divisors is an integer number (115775216511267).

Almost surely, 2^{231550433022533} is an apocalyptic number.

It is an amenable number.

231550433022533 is a deficient number, since it is larger than the sum of its proper divisors (1).

231550433022533 is an equidigital number, since it uses as much as digits as its factorization.

231550433022533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 41.

Adding to 231550433022533 its reverse (335220334055132), we get a palindrome (566770767077665).

The spelling of 231550433022533 in words is "two hundred thirty-one trillion, five hundred fifty billion, four hundred thirty-three million, twenty-two thousand, five hundred thirty-three".