1131200008 has 8 divisors (see below), whose sum is σ = 2121000030. Its totient is φ = 565600000.

The previous prime is 1131200003. The next prime is 1131200033. The reversal of 1131200008 is 8000021311.

It can be written as a sum of positive squares in only one way, i.e., 879596964 + 251603044 = 29658^2 + 15862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1131200008² = 2559226916198400128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131199964 and 1131200000.

It is not an unprimeable number, because it can be changed into a prime (1131200003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70699993 + ... + 70700008.

Almost surely, 2^1131200008 is an apocalyptic number.

It is an amenable number.

1131200008 is a deficient number, since it is larger than the sum of its proper divisors (989800022).

1131200008 is a wasteful number, since it uses less digits than its factorization.

1131200008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141400007 (or 141400003 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1131200008 is about 33633.3169342543. The cubic root of 1131200008 is about 1041.9490103659.

Adding to 1131200008 its reverse (8000021311), we get a palindrome (9131221319).

The spelling of 1131200008 in words is "one billion, one hundred thirty-one million, two hundred thousand, eight".