201044431997 has 8 divisors (see below), whose sum is σ = 201279411960. Its totient is φ = 200809532160.

The previous prime is 201044431993. The next prime is 201044432011. The reversal of 201044431997 is 799134440102.

It can be written as a sum of positive squares in 4 ways, for example, as 91294018201 + 109750413796 = 302149^2 + 331286^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201044431997 - 2² = 201044431993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044431993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6046097 + ... + 6079257.

It is an arithmetic number, because the mean of its divisors is an integer number (25159926495).

Almost surely, 2^201044431997 is an apocalyptic number.

It is an amenable number.

201044431997 is a deficient number, since it is larger than the sum of its proper divisors (234979963).

201044431997 is a wasteful number, since it uses less digits than its factorization.

201044431997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40063.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 201044431997 in words is "two hundred one billion, forty-four million, four hundred thirty-one thousand, nine hundred ninety-seven".