201031004420 has 96 divisors (see below), whose sum is σ = 448345497600. Its totient is φ = 75502627200.

The previous prime is 201031004359. The next prime is 201031004453. The reversal of 201031004420 is 24400130102.

It is a super-2 number, since 2×201031004420² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 48334301 + ... + 48338459.

It is an arithmetic number, because the mean of its divisors is an integer number (4670265600).

Almost surely, 2^201031004420 is an apocalyptic number.

201031004420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201031004420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224172748800).

201031004420 is an abundant number, since it is smaller than the sum of its proper divisors (247314493180).

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

201031004420 is a wasteful number, since it uses less digits than its factorization.

201031004420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289 (or 5287 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 201031004420 its reverse (24400130102), we get a palindrome (225431134522).

The spelling of 201031004420 in words is "two hundred one billion, thirty-one million, four thousand, four hundred twenty".