201220000431 has 4 divisors (see below), whose sum is σ = 268293333912. Its totient is φ = 134146666952.

The previous prime is 201220000417. The next prime is 201220000447. The reversal of 201220000431 is 134000022102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201220000431 - 2¹¹ = 201219998383 is a prime.

It is a super-2 number, since 2×201220000431² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201220000431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220040431) 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, 33536666736 + ... + 33536666741.

It is an arithmetic number, because the mean of its divisors is an integer number (67073333478).

Almost surely, 2^201220000431 is an apocalyptic number.

201220000431 is a deficient number, since it is larger than the sum of its proper divisors (67073333481).

201220000431 is an equidigital number, since it uses as much as digits as its factorization.

201220000431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67073333480.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 201220000431 its reverse (134000022102), we get a palindrome (335220022533).

The spelling of 201220000431 in words is "two hundred one billion, two hundred twenty million, four hundred thirty-one", and thus it is an aban number.