427001131321 has 4 divisors (see below), whose sum is σ = 427057613044. Its totient is φ = 426944649600.

The previous prime is 427001131313. The next prime is 427001131357. The reversal of 427001131321 is 123131100724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 258109722025 + 168891409296 = 508045^2 + 410964^2 .

It is a cyclic number.

It is not a de Polignac number, because 427001131321 - 2³ = 427001131313 is a prime.

It is a super-2 number, since 2×427001131321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427001101321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28229520 + ... + 28244641.

It is an arithmetic number, because the mean of its divisors is an integer number (106764403261).

Almost surely, 2^427001131321 is an apocalyptic number.

It is an amenable number.

427001131321 is a deficient number, since it is larger than the sum of its proper divisors (56481723).

427001131321 is an equidigital number, since it uses as much as digits as its factorization.

427001131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56481722.

The product of its (nonzero) digits is 1008, while the sum is 25.

The spelling of 427001131321 in words is "four hundred twenty-seven billion, one million, one hundred thirty-one thousand, three hundred twenty-one".