11131244442 has 12 divisors (see below), whose sum is σ = 24117696330. Its totient is φ = 3710414808.

The previous prime is 11131244429. The next prime is 11131244477. The reversal of 11131244442 is 24444213111.

It can be written as a sum of positive squares in only one way, i.e., 6108829281 + 5022415161 = 78159^2 + 70869^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 309201217 + ... + 309201252.

Almost surely, 2^11131244442 is an apocalyptic number.

11131244442 is an abundant number, since it is smaller than the sum of its proper divisors (12986451888).

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

11131244442 is a wasteful number, since it uses less digits than its factorization.

11131244442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618402477 (or 618402474 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 11131244442 its reverse (24444213111), we get a palindrome (35575457553).

The spelling of 11131244442 in words is "eleven billion, one hundred thirty-one million, two hundred forty-four thousand, four hundred forty-two".