11131405002 has 12 divisors (see below), whose sum is σ = 24118044210. Its totient is φ = 3710468328.

The previous prime is 11131404983. The next prime is 11131405039. The reversal of 11131405002 is 20050413111.

11131405002 is a `hidden beast` number, since 11 + 13 + 140 + 500 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10506455001 + 624950001 = 102501^2 + 24999^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 618411389 = 11131405002 / (1 + 1 + 1 + 3 + 1 + 4 + 0 + 5 + 0 + 0 + 2).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 309205677 + ... + 309205712.

Almost surely, 2^11131405002 is an apocalyptic number.

11131405002 is an abundant number, since it is smaller than the sum of its proper divisors (12986639208).

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

11131405002 is a wasteful number, since it uses less digits than its factorization.

11131405002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618411397 (or 618411394 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 11131405002 its reverse (20050413111), we get a palindrome (31181818113).

The spelling of 11131405002 in words is "eleven billion, one hundred thirty-one million, four hundred five thousand, two".