320453253140 has 24 divisors (see below), whose sum is σ = 672966199080. Its totient is φ = 128178564608.

The previous prime is 320453253097. The next prime is 320453253149. The reversal of 320453253140 is 41352354023.

It can be written as a sum of positive squares in 4 ways, for example, as 157726533904 + 162726719236 = 397148^2 + 403394^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320453253097 and 320453253106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320453253149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977144 + ... + 1263216.

It is an arithmetic number, because the mean of its divisors is an integer number (28040258295).

Almost surely, 2^320453253140 is an apocalyptic number.

It is an amenable number.

320453253140 is an abundant number, since it is smaller than the sum of its proper divisors (352512945940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320453253140 is a wasteful number, since it uses less digits than its factorization.

320453253140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342091 (or 342089 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The spelling of 320453253140 in words is "three hundred twenty billion, four hundred fifty-three million, two hundred fifty-three thousand, one hundred forty".