1131002205 has 16 divisors (see below), whose sum is σ = 1820067840. Its totient is φ = 599713088.

The previous prime is 1131002167. The next prime is 1131002209. The reversal of 1131002205 is 5022001311.

It is a cyclic number.

It is not a de Polignac number, because 1131002205 - 2¹² = 1130998109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131002209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215325 + ... + 220514.

It is an arithmetic number, because the mean of its divisors is an integer number (113754240).

Almost surely, 2^1131002205 is an apocalyptic number.

1131002205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131002205 is a deficient number, since it is larger than the sum of its proper divisors (689065635).

1131002205 is a wasteful number, since it uses less digits than its factorization.

1131002205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436020.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1131002205 is about 33630.3762244790. The cubic root of 1131002205 is about 1041.8882746714. Note that the first 3 decimals are identical.

Adding to 1131002205 its reverse (5022001311), we get a palindrome (6153003516).

The spelling of 1131002205 in words is "one billion, one hundred thirty-one million, two thousand, two hundred five".