1131207147 has 64 divisors (see below), whose sum is σ = 1994112000. Its totient is φ = 620089344.

The previous prime is 1131207131. The next prime is 1131207151. The reversal of 1131207147 is 7417021311.

It is not a de Polignac number, because 1131207147 - 2⁴ = 1131207131 is a prime.

It is a super-3 number, since 3×1131207147³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1131207147.

It is not an unprimeable number, because it can be changed into a prime (1131207107) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 980523 + ... + 981675.

It is an arithmetic number, because the mean of its divisors is an integer number (31158000).

Almost surely, 2^1131207147 is an apocalyptic number.

1131207147 is a deficient number, since it is larger than the sum of its proper divisors (862904853).

1131207147 is a wasteful number, since it uses less digits than its factorization.

1131207147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 1131207147 is about 33633.4230639702. The cubic root of 1131207147 is about 1041.9512022737.

Adding to 1131207147 its reverse (7417021311), we get a palindrome (8548228458).

The spelling of 1131207147 in words is "one billion, one hundred thirty-one million, two hundred seven thousand, one hundred forty-seven".