231532433540544 has 28 divisors (see below), whose sum is σ = 612596230409864. Its totient is φ = 77177477846784.

The previous prime is 231532433540491. The next prime is 231532433540593. The reversal of 231532433540544 is 445045334235132.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 231532433540493 and 231532433540502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602949045487 + ... + 602949045870.

Almost surely, 2^{231532433540544} is an apocalyptic number.

231532433540544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231532433540544 is an abundant number, since it is smaller than the sum of its proper divisors (381063796869320).

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

231532433540544 is a wasteful number, since it uses less digits than its factorization.

231532433540544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205898091372 (or 1205898091362 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 48.

Adding to 231532433540544 its reverse (445045334235132), we get a palindrome (676577767775676).

The spelling of 231532433540544 in words is "two hundred thirty-one trillion, five hundred thirty-two billion, four hundred thirty-three million, five hundred forty thousand, five hundred forty-four".