1131200205 has 8 divisors (see below), whose sum is σ = 1809920352. Its totient is φ = 603306768.

The previous prime is 1131200197. The next prime is 1131200219. The reversal of 1131200205 is 5020021311.

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

It is not a de Polignac number, because 1131200205 - 2³ = 1131200197 is a prime.

It is a super-2 number, since 2×1131200205² = 2559227807584084050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 75413347 = 1131200205 / (1 + 1 + 3 + 1 + 2 + 0 + 0 + 2 + 0 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37706659 + ... + 37706688.

It is an arithmetic number, because the mean of its divisors is an integer number (226240044).

Almost surely, 2^1131200205 is an apocalyptic number.

1131200205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131200205 is a deficient number, since it is larger than the sum of its proper divisors (678720147).

1131200205 is an equidigital number, since it uses as much as digits as its factorization.

1131200205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75413355.

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

The square root of 1131200205 is about 33633.3198628979. The cubic root of 1131200205 is about 1041.9490708515.

Adding to 1131200205 its reverse (5020021311), we get a palindrome (6151221516).

The spelling of 1131200205 in words is "one billion, one hundred thirty-one million, two hundred thousand, two hundred five".