201031004421 has 48 divisors (see below), whose sum is σ = 313929907200. Its totient is φ = 123231684096.

The previous prime is 201031004359. The next prime is 201031004453. The reversal of 201031004421 is 124400130102.

201031004421 is a `hidden beast` number, since 20 + 103 + 100 + 442 + 1 = 666.

It is not a de Polignac number, because 201031004421 - 2¹¹ = 201031002373 is a prime.

It is a super-2 number, since 2×201031004421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201031004394 and 201031004403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201031004491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36422500 + ... + 36428018.

It is an arithmetic number, because the mean of its divisors is an integer number (6540206400).

Almost surely, 2^201031004421 is an apocalyptic number.

It is an amenable number.

201031004421 is a deficient number, since it is larger than the sum of its proper divisors (112898902779).

201031004421 is a wasteful number, since it uses less digits than its factorization.

201031004421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690 (or 6687 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201031004421 its reverse (124400130102), we get a palindrome (325431134523).

The spelling of 201031004421 in words is "two hundred one billion, thirty-one million, four thousand, four hundred twenty-one".