203400220434420 has 96 divisors (see below), whose sum is σ = 572821107183360. Its totient is φ = 53925735674880.

The previous prime is 203400220434391. The next prime is 203400220434431. The reversal of 203400220434420 is 24434022004302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1119713961 + ... + 1119895599.

It is an arithmetic number, because the mean of its divisors is an integer number (5966886533160).

Almost surely, 2^{203400220434420} is an apocalyptic number.

203400220434420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203400220434420 is an abundant number, since it is smaller than the sum of its proper divisors (369420886748940).

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

203400220434420 is a wasteful number, since it uses less digits than its factorization.

203400220434420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289705 (or 289703 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 203400220434420 its reverse (24434022004302), we get a palindrome (227834242438722).

The spelling of 203400220434420 in words is "two hundred three trillion, four hundred billion, two hundred twenty million, four hundred thirty-four thousand, four hundred twenty".