1131244413 has 16 divisors (see below), whose sum is σ = 1719902016. Its totient is φ = 655200000.

The previous prime is 1131244409. The next prime is 1131244417. The reversal of 1131244413 is 3144421311.

It is an interprime number because it is at equal distance from previous prime (1131244409) and next prime (1131244417).

It is not a de Polignac number, because 1131244413 - 2² = 1131244409 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131244417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852463 + ... + 853788.

It is an arithmetic number, because the mean of its divisors is an integer number (107493876).

Almost surely, 2^1131244413 is an apocalyptic number.

1131244413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1131244413 is a deficient number, since it is larger than the sum of its proper divisors (588657603).

1131244413 is a wasteful number, since it uses less digits than its factorization.

1131244413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706284.

The product of its digits is 1152, while the sum is 24.

The square root of 1131244413 is about 33633.9770618938. The cubic root of 1131244413 is about 1041.9626440116.

Adding to 1131244413 its reverse (3144421311), we get a palindrome (4275665724).

The spelling of 1131244413 in words is "one billion, one hundred thirty-one million, two hundred forty-four thousand, four hundred thirteen".