320135421145 has 8 divisors (see below), whose sum is σ = 391410854856. Its totient is φ = 251276103936.

The previous prime is 320135421143. The next prime is 320135421149. The reversal of 320135421145 is 541124531023.

It can be written as a sum of positive squares in 4 ways, for example, as 65849205321 + 254286215824 = 256611^2 + 504268^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320135421145 - 2¹ = 320135421143 is a prime.

It is a super-2 number, since 2×320135421145² (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 (320135421143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604028832 + ... + 604029361.

It is an arithmetic number, because the mean of its divisors is an integer number (48926356857).

Almost surely, 2^320135421145 is an apocalyptic number.

It is an amenable number.

320135421145 is a deficient number, since it is larger than the sum of its proper divisors (71275433711).

320135421145 is a wasteful number, since it uses less digits than its factorization.

320135421145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208058251.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 320135421145 its reverse (541124531023), we get a palindrome (861259952168).

The spelling of 320135421145 in words is "three hundred twenty billion, one hundred thirty-five million, four hundred twenty-one thousand, one hundred forty-five".