1131244513 has 8 divisors (see below), whose sum is σ = 1293164928. Its totient is φ = 969402624.

The previous prime is 1131244493. The next prime is 1131244519. The reversal of 1131244513 is 3154421311.

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 1131244513 - 2⁹ = 1131244001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131244519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15420 + ... + 50002.

It is an arithmetic number, because the mean of its divisors is an integer number (161645616).

Almost surely, 2^1131244513 is an apocalyptic number.

It is an amenable number.

1131244513 is a deficient number, since it is larger than the sum of its proper divisors (161920415).

1131244513 is an equidigital number, since it uses as much as digits as its factorization.

1131244513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39263.

The product of its digits is 1440, while the sum is 25.

The square root of 1131244513 is about 33633.9785484858. The cubic root of 1131244513 is about 1041.9626747141.

Adding to 1131244513 its reverse (3154421311), we get a palindrome (4285665824).

The spelling of 1131244513 in words is "one billion, one hundred thirty-one million, two hundred forty-four thousand, five hundred thirteen".