11103103131 has 16 divisors (see below), whose sum is σ = 15585546240. Its totient is φ = 7011476640.

The previous prime is 11103103117. The next prime is 11103103147. The reversal of 11103103131 is 13130130111.

It is a de Polignac number, because none of the positive numbers 2^k-11103103131 is a prime.

It is a super-2 number, since 2×11103103131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11103103131.

It is not an unprimeable number, because it can be changed into a prime (11103101131) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 714561 + ... + 729933.

It is an arithmetic number, because the mean of its divisors is an integer number (974096640).

Almost surely, 2^11103103131 is an apocalyptic number.

11103103131 is a deficient number, since it is larger than the sum of its proper divisors (4482443109).

11103103131 is a wasteful number, since it uses less digits than its factorization.

11103103131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28066.

The product of its (nonzero) digits is 27, while the sum is 15.

Adding to 11103103131 its reverse (13130130111), we get a palindrome (24233233242).

The spelling of 11103103131 in words is "eleven billion, one hundred three million, one hundred three thousand, one hundred thirty-one".