11103131 has 6 divisors (see below), whose sum is σ = 12023100. Its totient is φ = 10248888.

The previous prime is 11103119. The next prime is 11103133. The reversal of 11103131 is 13130111.

It is a happy number.

It is not a de Polignac number, because 11103131 - 2²² = 6908827 is a prime.

It is a super-2 number, since 2×11103131² = 246559036006322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32681 + ... + 33018.

It is an arithmetic number, because the mean of its divisors is an integer number (2003850).

Almost surely, 2^11103131 is an apocalyptic number.

11103131 is a deficient number, since it is larger than the sum of its proper divisors (919969).

11103131 is an equidigital number, since it uses as much as digits as its factorization.

11103131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65725 (or 65712 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 11103131 is about 3332.1361016621. The cubic root of 11103131 is about 223.0908824064.

Adding to 11103131 its reverse (13130111), we get a palindrome (24233242).

The spelling of 11103131 in words is "eleven million, one hundred three thousand, one hundred thirty-one".