11311125 has 64 divisors (see below), whose sum is σ = 22364160. Its totient is φ = 4968000.

The previous prime is 11311123. The next prime is 11311127. The reversal of 11311125 is 52111311.

It is an interprime number because it is at equal distance from previous prime (11311123) and next prime (11311127).

It is not a de Polignac number, because 11311125 - 2¹ = 11311123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81306 + ... + 81444.

It is an arithmetic number, because the mean of its divisors is an integer number (349440).

Almost surely, 2^11311125 is an apocalyptic number.

11311125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11311125 is a deficient number, since it is larger than the sum of its proper divisors (11053035).

11311125 is a wasteful number, since it uses less digits than its factorization.

11311125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 185 counting only the distinct ones).

The product of its digits is 30, while the sum is 15.

The square root of 11311125 is about 3363.2015996666. The cubic root of 11311125 is about 224.4753206569.

Adding to 11311125 its reverse (52111311), we get a palindrome (63422436).

The spelling of 11311125 in words is "eleven million, three hundred eleven thousand, one hundred twenty-five".