1131442215 has 8 divisors (see below), whose sum is σ = 1810307568. Its totient is φ = 603435840.

The previous prime is 1131442211. The next prime is 1131442217. The reversal of 1131442215 is 5122441311.

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

It is not a de Polignac number, because 1131442215 - 2² = 1131442211 is a prime.

It is a super-2 number, since 2×1131442215² = 2560322971768212450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131442211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37714726 + ... + 37714755.

It is an arithmetic number, because the mean of its divisors is an integer number (226288446).

Almost surely, 2^1131442215 is an apocalyptic number.

1131442215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1131442215 is a deficient number, since it is larger than the sum of its proper divisors (678865353).

1131442215 is an equidigital number, since it uses as much as digits as its factorization.

1131442215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75429489.

The product of its digits is 960, while the sum is 24.

The square root of 1131442215 is about 33636.9174420011. The cubic root of 1131442215 is about 1042.0233707302.

Adding to 1131442215 its reverse (5122441311), we get a palindrome (6253883526).

The spelling of 1131442215 in words is "one billion, one hundred thirty-one million, four hundred forty-two thousand, two hundred fifteen".