303404523220420 has 12 divisors (see below), whose sum is σ = 637149498762924. Its totient is φ = 121361809288160.

The previous prime is 303404523220387. The next prime is 303404523220427. The reversal of 303404523220420 is 24022325404303.

It can be written as a sum of positive squares in 2 ways, for example, as 242133952907716 + 61270570312704 = 15560654^2 + 7827552^2 .

It is a super-3 number, since 3×303404523220420³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (303404523220427) 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, 7585113080491 + ... + 7585113080530.

It is an arithmetic number, because the mean of its divisors is an integer number (53095791563577).

Almost surely, 2^{303404523220420} is an apocalyptic number.

It is an amenable number.

303404523220420 is an abundant number, since it is smaller than the sum of its proper divisors (333744975542504).

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

303404523220420 is a wasteful number, since it uses less digits than its factorization.

303404523220420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15170226161030 (or 15170226161028 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 34.

Adding to 303404523220420 its reverse (24022325404303), we get a palindrome (327426848624723).

The spelling of 303404523220420 in words is "three hundred three trillion, four hundred four billion, five hundred twenty-three million, two hundred twenty thousand, four hundred twenty".