320121425131 has 4 divisors (see below), whose sum is σ = 322565100264. Its totient is φ = 317677750000.

The previous prime is 320121425047. The next prime is 320121425147. The reversal of 320121425131 is 131524121023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131524121023 = 87943 ⋅1495561.

It is a cyclic number.

It is not a de Polignac number, because 320121425131 - 2¹³ = 320121416939 is a prime.

It is a super-2 number, since 2×320121425131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320121425096 and 320121425105.

It is not an unprimeable number, because it can be changed into a prime (320121425531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1221837370 + ... + 1221837631.

It is an arithmetic number, because the mean of its divisors is an integer number (80641275066).

Almost surely, 2^320121425131 is an apocalyptic number.

320121425131 is a deficient number, since it is larger than the sum of its proper divisors (2443675133).

320121425131 is a wasteful number, since it uses less digits than its factorization.

320121425131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443675132.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 320121425131 its reverse (131524121023), we get a palindrome (451645546154).

The spelling of 320121425131 in words is "three hundred twenty billion, one hundred twenty-one million, four hundred twenty-five thousand, one hundred thirty-one".