231520041550401 has 24 divisors (see below), whose sum is σ = 327925594302720. Its totient is φ = 145264983988992.

The previous prime is 231520041550387. The next prime is 231520041550489. The reversal of 231520041550401 is 104055140025132.

It is not a de Polignac number, because 231520041550401 - 2¹¹ = 231520041548353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231520041550601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48916240 + ... + 53440046.

It is an arithmetic number, because the mean of its divisors is an integer number (13663566429280).

Almost surely, 2^{231520041550401} is an apocalyptic number.

It is an amenable number.

231520041550401 is a deficient number, since it is larger than the sum of its proper divisors (96405552752319).

231520041550401 is a wasteful number, since it uses less digits than its factorization.

231520041550401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4582873 (or 4582856 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 231520041550401 its reverse (104055140025132), we get a palindrome (335575181575533).

The spelling of 231520041550401 in words is "two hundred thirty-one trillion, five hundred twenty billion, forty-one million, five hundred fifty thousand, four hundred one".