1121131507 has 4 divisors (see below), whose sum is σ = 1121233680. Its totient is φ = 1121029336.

The previous prime is 1121131493. The next prime is 1121131549. The reversal of 1121131507 is 7051311211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1121131507 - 2¹¹ = 1121129459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121131597) 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 3 ways as a sum of consecutive naturals, for example, 32332 + ... + 57337.

It is an arithmetic number, because the mean of its divisors is an integer number (280308420).

Almost surely, 2^1121131507 is an apocalyptic number.

1121131507 is a deficient number, since it is larger than the sum of its proper divisors (102173).

1121131507 is an equidigital number, since it uses as much as digits as its factorization.

1121131507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102172.

The product of its (nonzero) digits is 210, while the sum is 22.

The square root of 1121131507 is about 33483.3019130432. The cubic root of 1121131507 is about 1038.8484254871.

Adding to 1121131507 its reverse (7051311211), we get a palindrome (8172442718).

The spelling of 1121131507 in words is "one billion, one hundred twenty-one million, one hundred thirty-one thousand, five hundred seven".