320454445131 has 32 divisors (see below), whose sum is σ = 477707328000. Its totient is φ = 212304929760.

The previous prime is 320454445123. The next prime is 320454445139. The reversal of 320454445131 is 131544454023.

320454445131 is a `hidden beast` number, since 3 + 204 + 5 + 4 + 445 + 1 + 3 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (320454445123) and next prime (320454445139).

It is not a de Polignac number, because 320454445131 - 2³ = 320454445123 is a prime.

It is a super-2 number, since 2×320454445131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320454445139) 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 31 ways as a sum of consecutive naturals, for example, 29262445 + ... + 29273393.

It is an arithmetic number, because the mean of its divisors is an integer number (14928354000).

Almost surely, 2^320454445131 is an apocalyptic number.

320454445131 is a deficient number, since it is larger than the sum of its proper divisors (157252882869).

320454445131 is a wasteful number, since it uses less digits than its factorization.

320454445131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17616 (or 17610 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 320454445131 its reverse (131544454023), we get a palindrome (451998899154).

The spelling of 320454445131 in words is "three hundred twenty billion, four hundred fifty-four million, four hundred forty-five thousand, one hundred thirty-one".