231520004033340 has 288 divisors, whose sum is σ = 710885173856256. Its totient is φ = 55834156984320.

The previous prime is 231520004033327. The next prime is 231520004033369. The reversal of 231520004033340 is 43330400025132.

231520004033340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 231520004033298 and 231520004033307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 52062062997 + ... + 52062067443.

It is an arithmetic number, because the mean of its divisors is an integer number (2468351298112).

Almost surely, 2^{231520004033340} is an apocalyptic number.

231520004033340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231520004033340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355442586928128).

231520004033340 is an abundant number, since it is smaller than the sum of its proper divisors (479365169822916).

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

231520004033340 is a wasteful number, since it uses less digits than its factorization.

231520004033340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6389 (or 6154 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 231520004033340 its reverse (43330400025132), we get a palindrome (274850404058472).

The spelling of 231520004033340 in words is "two hundred thirty-one trillion, five hundred twenty billion, four million, thirty-three thousand, three hundred forty".