320835452381 has 8 divisors (see below), whose sum is σ = 326439513720. Its totient is φ = 315264068352.

The previous prime is 320835452363. The next prime is 320835452393. The reversal of 320835452381 is 183254538023.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7273531225 + 313561921156 = 85285^2 + 559966^2 .

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 320835452381 - 2¹⁴ = 320835435997 is a prime.

It is a super-2 number, since 2×320835452381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320835452321) 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, 8149520 + ... + 8188793.

It is an arithmetic number, because the mean of its divisors is an integer number (40804939215).

Almost surely, 2^320835452381 is an apocalyptic number.

It is an amenable number.

320835452381 is a deficient number, since it is larger than the sum of its proper divisors (5604061339).

320835452381 is a wasteful number, since it uses less digits than its factorization.

320835452381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16338655.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 320835452381 in words is "three hundred twenty billion, eight hundred thirty-five million, four hundred fifty-two thousand, three hundred eighty-one".