1103205231 has 8 divisors (see below), whose sum is σ = 1634378160. Its totient is φ = 735470136.

The previous prime is 1103205223. The next prime is 1103205263. The reversal of 1103205231 is 1325023011.

1103205231 is a `hidden beast` number, since 110 + 32 + 0 + 523 + 1 = 666.

It is not a de Polignac number, because 1103205231 - 2³ = 1103205223 is a prime.

It is a super-2 number, since 2×1103205231² = 2434123563411526722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103205031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20429700 + ... + 20429753.

It is an arithmetic number, because the mean of its divisors is an integer number (204297270).

Almost surely, 2^1103205231 is an apocalyptic number.

1103205231 is a deficient number, since it is larger than the sum of its proper divisors (531172929).

1103205231 is an equidigital number, since it uses as much as digits as its factorization.

1103205231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40859462 (or 40859456 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1103205231 is about 33214.5334304127. The cubic root of 1103205231 is about 1033.2817784083.

Adding to 1103205231 its reverse (1325023011), we get a palindrome (2428228242).

The spelling of 1103205231 in words is "one billion, one hundred three million, two hundred five thousand, two hundred thirty-one".