231553022443133 has 8 divisors (see below), whose sum is σ = 231590380554240. Its totient is φ = 231515667068400.

The previous prime is 231553022443129. The next prime is 231553022443189. The reversal of 231553022443133 is 331344220355132.

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

It is a cyclic number.

It is not a de Polignac number, because 231553022443133 - 2² = 231553022443129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231553022443733) 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, 172072916 + ... + 173413362.

It is an arithmetic number, because the mean of its divisors is an integer number (28948797569280).

Almost surely, 2^{231553022443133} is an apocalyptic number.

It is an amenable number.

231553022443133 is a deficient number, since it is larger than the sum of its proper divisors (37358111107).

231553022443133 is a wasteful number, since it uses less digits than its factorization.

231553022443133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368187.

The product of its (nonzero) digits is 777600, while the sum is 41.

Adding to 231553022443133 its reverse (331344220355132), we get a palindrome (562897242798265).

The spelling of 231553022443133 in words is "two hundred thirty-one trillion, five hundred fifty-three billion, twenty-two million, four hundred forty-three thousand, one hundred thirty-three".