323140520452 has 24 divisors (see below), whose sum is σ = 567615499416. Its totient is φ = 160964825088.

The previous prime is 323140520449. The next prime is 323140520491. The reversal of 323140520452 is 254025041323.

It can be written as a sum of positive squares in 4 ways, for example, as 4927197636 + 318213322816 = 70194^2 + 564104^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10547268 + ... + 10577860.

It is an arithmetic number, because the mean of its divisors is an integer number (23650645809).

Almost surely, 2^323140520452 is an apocalyptic number.

It is an amenable number.

323140520452 is a deficient number, since it is larger than the sum of its proper divisors (244474978964).

323140520452 is a wasteful number, since it uses less digits than its factorization.

323140520452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40407 (or 40405 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 323140520452 its reverse (254025041323), we get a palindrome (577165561775).

The spelling of 323140520452 in words is "three hundred twenty-three billion, one hundred forty million, five hundred twenty thousand, four hundred fifty-two".