1131382947 has 8 divisors (see below), whose sum is σ = 1509875280. Its totient is φ = 753572960.

The previous prime is 1131382943. The next prime is 1131382957. The reversal of 1131382947 is 7492831311.

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 1131382947 - 2² = 1131382943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131382943) 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, 166704 + ... + 173357.

It is an arithmetic number, because the mean of its divisors is an integer number (188734410).

Almost surely, 2^1131382947 is an apocalyptic number.

1131382947 is a deficient number, since it is larger than the sum of its proper divisors (378492333).

1131382947 is a wasteful number, since it uses less digits than its factorization.

1131382947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341173.

The product of its digits is 36288, while the sum is 39.

The square root of 1131382947 is about 33636.0364341579. The cubic root of 1131382947 is about 1042.0051757461.

The spelling of 1131382947 in words is "one billion, one hundred thirty-one million, three hundred eighty-two thousand, nine hundred forty-seven".