131230240521 has 8 divisors (see below), whose sum is σ = 185266221984. Its totient is φ = 82340543040.

The previous prime is 131230240511. The next prime is 131230240523. The reversal of 131230240521 is 125042032131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131230240521 - 2¹⁵ = 131230207753 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131230240491 and 131230240500.

It is not an unprimeable number, because it can be changed into a prime (131230240523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286570935 + ... + 1286571036.

It is an arithmetic number, because the mean of its divisors is an integer number (23158277748).

Almost surely, 2^131230240521 is an apocalyptic number.

It is an amenable number.

131230240521 is a deficient number, since it is larger than the sum of its proper divisors (54035981463).

131230240521 is a wasteful number, since it uses less digits than its factorization.

131230240521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573141991.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 131230240521 its reverse (125042032131), we get a palindrome (256272272652).

The spelling of 131230240521 in words is "one hundred thirty-one billion, two hundred thirty million, two hundred forty thousand, five hundred twenty-one".