1100204431 has 4 divisors (see below), whose sum is σ = 1101999832. Its totient is φ = 1098409032.

The previous prime is 1100204381. The next prime is 1100204437. The reversal of 1100204431 is 1344020011.

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 1100204431 - 2¹³ = 1100196239 is a prime.

It is a super-2 number, since 2×1100204431² = 2420899579984067522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100204437) 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, 896781 + ... + 898006.

It is an arithmetic number, because the mean of its divisors is an integer number (275499958).

Almost surely, 2^1100204431 is an apocalyptic number.

1100204431 is a deficient number, since it is larger than the sum of its proper divisors (1795401).

1100204431 is an equidigital number, since it uses as much as digits as its factorization.

1100204431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795400.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1100204431 is about 33169.3296736609. The cubic root of 1100204431 is about 1032.3440599971.

Adding to 1100204431 its reverse (1344020011), we get a palindrome (2444224442).

The spelling of 1100204431 in words is "one billion, one hundred million, two hundred four thousand, four hundred thirty-one".