1131200233 has 2 divisors, whose sum is σ = 1131200234. Its totient is φ = 1131200232.

The previous prime is 1131200219. The next prime is 1131200243. The reversal of 1131200233 is 3320021311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1130775129 + 425104 = 33627^2 + 652^2 .

It is an emirp because it is prime and its reverse (3320021311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131200233 - 2²⁹ = 594329321 is a prime.

It is a super-3 number, since 3×1131200233³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1131200243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565600116 + 565600117.

It is an arithmetic number, because the mean of its divisors is an integer number (565600117).

Almost surely, 2^1131200233 is an apocalyptic number.

It is an amenable number.

1131200233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131200233 is an equidigital number, since it uses as much as digits as its factorization.

1131200233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1131200233 is about 33633.3202791517. The cubic root of 1131200233 is about 1041.9490794484.

Adding to 1131200233 its reverse (3320021311), we get a palindrome (4451221544).

The spelling of 1131200233 in words is "one billion, one hundred thirty-one million, two hundred thousand, two hundred thirty-three".