231503441353440 has 96 divisors (see below), whose sum is σ = 730084777349760. Its totient is φ = 61662383337984.

The previous prime is 231503441353391. The next prime is 231503441353523. The reversal of 231503441353440 is 44353144305132.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 231503441353392 and 231503441353401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280320414 + ... + 281145053.

It is an arithmetic number, because the mean of its divisors is an integer number (7605049764060).

Almost surely, 2^{231503441353440} is an apocalyptic number.

231503441353440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231503441353440 is an abundant number, since it is smaller than the sum of its proper divisors (498581335996320).

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

231503441353440 is a wasteful number, since it uses less digits than its factorization.

231503441353440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561466344 (or 561466336 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

Adding to 231503441353440 its reverse (44353144305132), we get a palindrome (275856585658572).

The spelling of 231503441353440 in words is "two hundred thirty-one trillion, five hundred three billion, four hundred forty-one million, three hundred fifty-three thousand, four hundred forty".