231553533142332 has 144 divisors (see below), whose sum is σ = 620439779992032. Its totient is φ = 72562968698880.

The previous prime is 231553533142319. The next prime is 231553533142339. The reversal of 231553533142332 is 233241335355132.

231553533142332 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 53 + 53 + 314 + 233 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231553533142339) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5809587748 + ... + 5809627604.

It is an arithmetic number, because the mean of its divisors is an integer number (4308609583278).

Almost surely, 2^{231553533142332} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231553533142332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310219889996016).

231553533142332 is an abundant number, since it is smaller than the sum of its proper divisors (388886246849700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231553533142332 is a wasteful number, since it uses less digits than its factorization.

231553533142332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50268 (or 50263 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 45.

Adding to 231553533142332 its reverse (233241335355132), we get a palindrome (464794868497464).

The spelling of 231553533142332 in words is "two hundred thirty-one trillion, five hundred fifty-three billion, five hundred thirty-three million, one hundred forty-two thousand, three hundred thirty-two".