131330422352421 has 12 divisors (see below), whose sum is σ = 189700522372972. Its totient is φ = 87553142554176.

The previous prime is 131330422352417. The next prime is 131330422352443. The reversal of 131330422352421 is 124253224033131.

131330422352421 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 3 + 0 + 4 + 223 + 5 + 2 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 87492264912900 + 43838157439521 = 9353730^2 + 6621039^2 .

It is not a de Polignac number, because 131330422352421 - 2² = 131330422352417 is a prime.

It is a super-2 number, since 2×131330422352421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131330422352491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37597216 + ... + 40941561.

Almost surely, 2^{131330422352421} is an apocalyptic number.

It is an amenable number.

131330422352421 is a deficient number, since it is larger than the sum of its proper divisors (58370100020551).

131330422352421 is a wasteful number, since it uses less digits than its factorization.

131330422352421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78724580 (or 78724577 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 131330422352421 its reverse (124253224033131), we get a palindrome (255583646385552).

The spelling of 131330422352421 in words is "one hundred thirty-one trillion, three hundred thirty billion, four hundred twenty-two million, three hundred fifty-two thousand, four hundred twenty-one".