320203132223220 has 36 divisors (see below), whose sum is σ = 971282834410980. Its totient is φ = 85387501926144.

The previous prime is 320203132223041. The next prime is 320203132223237. The reversal of 320203132223220 is 22322231302023.

320203132223220 is a `hidden beast` number, since 3 + 2 + 0 + 2 + 0 + 313 + 2 + 22 + 322 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 178381614097764 + 141821518125456 = 13355958^2 + 11908884^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889453144885 + ... + 889453145244.

Almost surely, 2^{320203132223220} is an apocalyptic number.

320203132223220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320203132223220 is an abundant number, since it is smaller than the sum of its proper divisors (651079702187760).

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

320203132223220 is a wasteful number, since it uses less digits than its factorization.

320203132223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778906290144 (or 1778906290139 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 320203132223220 its reverse (22322231302023), we get a palindrome (342525363525243).

The spelling of 320203132223220 in words is "three hundred twenty trillion, two hundred three billion, one hundred thirty-two million, two hundred twenty-three thousand, two hundred twenty".