131201130322421 has 8 divisors (see below), whose sum is σ = 132072846980184. Its totient is φ = 130331491655680.

The previous prime is 131201130322349. The next prime is 131201130322501. The reversal of 131201130322421 is 124223031102131.

It can be written as a sum of positive squares in 4 ways, for example, as 117048900139396 + 14152230183025 = 10818914^2 + 3761945^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 131201130322421 - 2³⁰ = 131200056580597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201130321421) 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, 519371060 + ... + 519623613.

It is an arithmetic number, because the mean of its divisors is an integer number (16509105872523).

Almost surely, 2^{131201130322421} is an apocalyptic number.

It is an amenable number.

131201130322421 is a deficient number, since it is larger than the sum of its proper divisors (871716657763).

131201130322421 is a wasteful number, since it uses less digits than its factorization.

131201130322421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038995511.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 131201130322421 its reverse (124223031102131), we get a palindrome (255424161424552).

The spelling of 131201130322421 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred thirty million, three hundred twenty-two thousand, four hundred twenty-one".