201103503445 has 32 divisors (see below), whose sum is σ = 265282958304. Its totient is φ = 145445068800.

The previous prime is 201103503383. The next prime is 201103503457. The reversal of 201103503445 is 544305301102.

It can be written as a sum of positive squares in 16 ways, for example, as 189787437316 + 11316066129 = 435646^2 + 106377^2 .

It is not a de Polignac number, because 201103503445 - 2¹⁷ = 201103372373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815005 + ... + 1032685.

It is an arithmetic number, because the mean of its divisors is an integer number (8290092447).

Almost surely, 2^201103503445 is an apocalyptic number.

It is an amenable number.

201103503445 is a deficient number, since it is larger than the sum of its proper divisors (64179454859).

201103503445 is a wasteful number, since it uses less digits than its factorization.

201103503445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217993.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 201103503445 its reverse (544305301102), we get a palindrome (745408804547).

The spelling of 201103503445 in words is "two hundred one billion, one hundred three million, five hundred three thousand, four hundred forty-five".