320131442421 has 24 divisors (see below), whose sum is σ = 530039150784. Its totient is φ = 182389415040.

The previous prime is 320131442419. The next prime is 320131442429. The reversal of 320131442421 is 124244131023.

320131442421 is a `hidden beast` number, since 3 + 201 + 3 + 14 + 424 + 21 = 666.

It is not a de Polignac number, because 320131442421 - 2¹ = 320131442419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131442429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7518015 + ... + 7560476.

It is an arithmetic number, because the mean of its divisors is an integer number (22084964616).

Almost surely, 2^320131442421 is an apocalyptic number.

It is an amenable number.

320131442421 is a deficient number, since it is larger than the sum of its proper divisors (209907708363).

320131442421 is a wasteful number, since it uses less digits than its factorization.

320131442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15078841 (or 15078838 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 320131442421 its reverse (124244131023), we get a palindrome (444375573444).

The spelling of 320131442421 in words is "three hundred twenty billion, one hundred thirty-one million, four hundred forty-two thousand, four hundred twenty-one".