11103425531 has 4 divisors (see below), whose sum is σ = 12112827864. Its totient is φ = 10094023200.

The previous prime is 11103425519. The next prime is 11103425533. The reversal of 11103425531 is 13552430111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13552430111 = 11 ⋅1232039101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11103425531 is a prime.

It is a super-2 number, since 2×11103425531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11103425531.

It is not an unprimeable number, because it can be changed into a prime (11103425533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504701150 + ... + 504701171.

It is an arithmetic number, because the mean of its divisors is an integer number (3028206966).

Almost surely, 2^11103425531 is an apocalyptic number.

11103425531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11103425531 is a deficient number, since it is larger than the sum of its proper divisors (1009402333).

11103425531 is a wasteful number, since it uses less digits than its factorization.

11103425531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009402332.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 11103425531 its reverse (13552430111), we get a palindrome (24655855642).

It can be divided in two parts, 11103 and 425531, that added together give a palindrome (436634).

The spelling of 11103425531 in words is "eleven billion, one hundred three million, four hundred twenty-five thousand, five hundred thirty-one".