320421131203 has 4 divisors (see below), whose sum is σ = 320483804248. Its totient is φ = 320358458160.

The previous prime is 320421131189. The next prime is 320421131221. The reversal of 320421131203 is 302131124023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302131124023 = 99191 ⋅3045953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320421131203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320421131293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31328853 + ... + 31339078.

It is an arithmetic number, because the mean of its divisors is an integer number (80120951062).

Almost surely, 2^320421131203 is an apocalyptic number.

320421131203 is a deficient number, since it is larger than the sum of its proper divisors (62673045).

320421131203 is an equidigital number, since it uses as much as digits as its factorization.

320421131203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62673044.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 320421131203 its reverse (302131124023), we get a palindrome (622552255226).

The spelling of 320421131203 in words is "three hundred twenty billion, four hundred twenty-one million, one hundred thirty-one thousand, two hundred three".