320145544131 has 16 divisors (see below), whose sum is σ = 487864666368. Its totient is φ = 182931372000.

The previous prime is 320145544129. The next prime is 320145544151. The reversal of 320145544131 is 131445541023.

It is not a de Polignac number, because 320145544131 - 2¹ = 320145544129 is a prime.

It is a super-2 number, since 2×320145544131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320145544092 and 320145544101.

It is not an unprimeable number, because it can be changed into a prime (320145544151) 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 15 ways as a sum of consecutive naturals, for example, 80356 + ... + 804206.

It is an arithmetic number, because the mean of its divisors is an integer number (30491541648).

Almost surely, 2^320145544131 is an apocalyptic number.

320145544131 is a deficient number, since it is larger than the sum of its proper divisors (167719122237).

320145544131 is a wasteful number, since it uses less digits than its factorization.

320145544131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744922.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 320145544131 in words is "three hundred twenty billion, one hundred forty-five million, five hundred forty-four thousand, one hundred thirty-one".