320131120202 has 4 divisors (see below), whose sum is σ = 480196680306. Its totient is φ = 160065560100.

The previous prime is 320131120201. The next prime is 320131120217. The reversal of 320131120202 is 202021131023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202021131023 = 1493 ⋅135312211.

It can be written as a sum of positive squares in only one way, i.e., 319723524481 + 407595721 = 565441^2 + 20189^2 .

It is not an unprimeable number, because it can be changed into a prime (320131120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80032780049 + ... + 80032780052.

Almost surely, 2^320131120202 is an apocalyptic number.

320131120202 is a deficient number, since it is larger than the sum of its proper divisors (160065560104).

320131120202 is a wasteful number, since it uses less digits than its factorization.

320131120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160065560103.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 320131120202 its reverse (202021131023), we get a palindrome (522152251225).

The spelling of 320131120202 in words is "three hundred twenty billion, one hundred thirty-one million, one hundred twenty thousand, two hundred two".