1131200223 has 16 divisors (see below), whose sum is σ = 1550142816. Its totient is φ = 733224960.

The previous prime is 1131200219. The next prime is 1131200233. The reversal of 1131200223 is 3220021311.

It is not a de Polignac number, because 1131200223 - 2² = 1131200219 is a prime.

It is a super-2 number, since 2×1131200223² = 2559227889030499458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131200233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205183 + ... + 210623.

It is an arithmetic number, because the mean of its divisors is an integer number (96883926).

Almost surely, 2^1131200223 is an apocalyptic number.

1131200223 is a deficient number, since it is larger than the sum of its proper divisors (418942593).

1131200223 is a wasteful number, since it uses less digits than its factorization.

1131200223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7354.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1131200223 is about 33633.3201304896. The cubic root of 1131200223 is about 1041.9490763781.

Adding to 1131200223 its reverse (3220021311), we get a palindrome (4351221534).

The spelling of 1131200223 in words is "one billion, one hundred thirty-one million, two hundred thousand, two hundred twenty-three".