11002131 has 12 divisors (see below), whose sum is σ = 18162352. Its totient is φ = 6286896.

The previous prime is 11002129. The next prime is 11002139. The reversal of 11002131 is 13120011.

11002131 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11002131 - 2¹ = 11002129 is a prime.

It is a super-2 number, since 2×11002131² = 242093773082322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

11002131 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87256 + ... + 87381.

Almost surely, 2^11002131 is an apocalyptic number.

11002131 is a deficient number, since it is larger than the sum of its proper divisors (7160221).

11002131 is a wasteful number, since it uses less digits than its factorization.

11002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174650 (or 174647 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 11002131 is about 3316.9460351353. The cubic root of 11002131 is about 222.4123696495.

Adding to 11002131 its reverse (13120011), we get a palindrome (24122142).

The spelling of 11002131 in words is "eleven million, two thousand, one hundred thirty-one".