1121631424 has 28 divisors (see below), whose sum is σ = 2280028968. Its totient is φ = 547136000.

The previous prime is 1121631419. The next prime is 1121631437. The reversal of 1121631424 is 4241361211.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211102 + ... + 216349.

It is an arithmetic number, because the mean of its divisors is an integer number (81429606).

Almost surely, 2^1121631424 is an apocalyptic number.

It is an amenable number.

1121631424 is an abundant number, since it is smaller than the sum of its proper divisors (1158397544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121631424 is an equidigital number, since it uses as much as digits as its factorization.

1121631424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427504 (or 427494 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 1121631424 is about 33490.7662498188. The cubic root of 1121631424 is about 1039.0028114245.

Adding to 1121631424 its reverse (4241361211), we get a palindrome (5362992635).

The spelling of 1121631424 in words is "one billion, one hundred twenty-one million, six hundred thirty-one thousand, four hundred twenty-four".