231533531324533 has 8 divisors (see below), whose sum is σ = 233826447835296. Its totient is φ = 229240624722000.

The previous prime is 231533531324519. The next prime is 231533531324551. The reversal of 231533531324533 is 335423135335132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231533531324533 is a prime.

It is a super-2 number, since 2×231533531324533² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231533531324573) 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, 49959010 + ... + 54396412.

It is an arithmetic number, because the mean of its divisors is an integer number (29228305979412).

Almost surely, 2^{231533531324533} is an apocalyptic number.

It is an amenable number.

231533531324533 is a deficient number, since it is larger than the sum of its proper divisors (2292916510763).

231533531324533 is a wasteful number, since it uses less digits than its factorization.

231533531324533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4954115.

The product of its digits is 4374000, while the sum is 46.

Adding to 231533531324533 its reverse (335423135335132), we get a palindrome (566956666659665).

The spelling of 231533531324533 in words is "two hundred thirty-one trillion, five hundred thirty-three billion, five hundred thirty-one million, three hundred twenty-four thousand, five hundred thirty-three".