1131214145 has 8 divisors (see below), whose sum is σ = 1357687656. Its totient is φ = 904817536.

The previous prime is 1131214141. The next prime is 1131214151. The reversal of 1131214145 is 5414121311.

It can be written as a sum of positive squares in 4 ways, for example, as 203889841 + 927324304 = 14279^2 + 30452^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1131214145 - 2² = 1131214141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131214145.

It is not an unprimeable number, because it can be changed into a prime (1131214141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20669 + ... + 51861.

It is an arithmetic number, because the mean of its divisors is an integer number (169710957).

Almost surely, 2^1131214145 is an apocalyptic number.

It is an amenable number.

1131214145 is a deficient number, since it is larger than the sum of its proper divisors (226473511).

1131214145 is an equidigital number, since it uses as much as digits as its factorization.

1131214145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38451.

The product of its digits is 480, while the sum is 23.

The square root of 1131214145 is about 33633.5270972284. The cubic root of 1131214145 is about 1041.9533508809.

Adding to 1131214145 its reverse (5414121311), we get a palindrome (6545335456).

The spelling of 1131214145 in words is "one billion, one hundred thirty-one million, two hundred fourteen thousand, one hundred forty-five".