1131310243 has 8 divisors (see below), whose sum is σ = 1302364512. Its totient is φ = 962615616.

The previous prime is 1131310241. The next prime is 1131310247. The reversal of 1131310243 is 3420131311.

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 1131310243 - 2¹ = 1131310241 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 1131310243.

It is not an unprimeable number, because it can be changed into a prime (1131310241) 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, 588880 + ... + 590797.

It is an arithmetic number, because the mean of its divisors is an integer number (162795564).

Almost surely, 2^1131310243 is an apocalyptic number.

1131310243 is a deficient number, since it is larger than the sum of its proper divisors (171054269).

1131310243 is a wasteful number, since it uses less digits than its factorization.

1131310243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179821.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1131310243 is about 33634.9556711466. The cubic root of 1131310243 is about 1041.9828551082.

Adding to 1131310243 its reverse (3420131311), we get a palindrome (4551441554).

The spelling of 1131310243 in words is "one billion, one hundred thirty-one million, three hundred ten thousand, two hundred forty-three".