231520006261641 has 16 divisors (see below), whose sum is σ = 322482083071104. Its totient is φ = 147467603969664.

The previous prime is 231520006261571. The next prime is 231520006261651. The reversal of 231520006261641 is 146162600025132.

It is not a de Polignac number, because 231520006261641 - 2⁷ = 231520006261513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231520006261641.

It is not an unprimeable number, because it can be changed into a prime (231520006261651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1912916916 + ... + 1913037941.

It is an arithmetic number, because the mean of its divisors is an integer number (20155130191944).

Almost surely, 2^{231520006261641} is an apocalyptic number.

It is an amenable number.

231520006261641 is a deficient number, since it is larger than the sum of its proper divisors (90962076809463).

231520006261641 is a wasteful number, since it uses less digits than its factorization.

231520006261641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825955760.

The product of its (nonzero) digits is 103680, while the sum is 39.

Adding to 231520006261641 its reverse (146162600025132), we get a palindrome (377682606286773).

The spelling of 231520006261641 in words is "two hundred thirty-one trillion, five hundred twenty billion, six million, two hundred sixty-one thousand, six hundred forty-one".