11131213103 has 16 divisors (see below), whose sum is σ = 11668440960. Its totient is φ = 10609685856.

The previous prime is 11131213091. The next prime is 11131213211. The reversal of 11131213103 is 30131213111.

It is a cyclic number.

It is not a de Polignac number, because 11131213103 - 2⁶ = 11131213039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131213003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290213 + ... + 326321.

It is an arithmetic number, because the mean of its divisors is an integer number (729277560).

Almost surely, 2^11131213103 is an apocalyptic number.

11131213103 is a deficient number, since it is larger than the sum of its proper divisors (537227857).

11131213103 is a wasteful number, since it uses less digits than its factorization.

11131213103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36326.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11131213103 its reverse (30131213111), we get a palindrome (41262426214).

The spelling of 11131213103 in words is "eleven billion, one hundred thirty-one million, two hundred thirteen thousand, one hundred three".