1131247135 has 8 divisors (see below), whose sum is σ = 1379750976. Its totient is φ = 890161440.

The previous prime is 1131247129. The next prime is 1131247147. The reversal of 1131247135 is 5317421311.

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

It is a de Polignac number, because none of the positive numbers 2^k-1131247135 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1854199 + ... + 1854808.

It is an arithmetic number, because the mean of its divisors is an integer number (172468872).

Almost surely, 2^1131247135 is an apocalyptic number.

1131247135 is a deficient number, since it is larger than the sum of its proper divisors (248503841).

1131247135 is an equidigital number, since it uses as much as digits as its factorization.

1131247135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709073.

The product of its digits is 2520, while the sum is 28.

The square root of 1131247135 is about 33634.0175269027. The cubic root of 1131247135 is about 1041.9634797343.

Adding to 1131247135 its reverse (5317421311), we get a palindrome (6448668446).

The spelling of 1131247135 in words is "one billion, one hundred thirty-one million, two hundred forty-seven thousand, one hundred thirty-five".