201044220431 has 4 divisors (see below), whose sum is σ = 201386715432. Its totient is φ = 200701725432.

The previous prime is 201044220407. The next prime is 201044220451. The reversal of 201044220431 is 134022440102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201044220431 is a prime.

It is a super-2 number, since 2×201044220431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201044220397 and 201044220406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044220451) 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, 171246620 + ... + 171247793.

It is an arithmetic number, because the mean of its divisors is an integer number (50346678858).

Almost surely, 2^201044220431 is an apocalyptic number.

201044220431 is a deficient number, since it is larger than the sum of its proper divisors (342495001).

201044220431 is an equidigital number, since it uses as much as digits as its factorization.

201044220431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342495000.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 201044220431 its reverse (134022440102), we get a palindrome (335066660533).

The spelling of 201044220431 in words is "two hundred one billion, forty-four million, two hundred twenty thousand, four hundred thirty-one".