11031312 has 20 divisors (see below), whose sum is σ = 28497680. Its totient is φ = 3677088.

The previous prime is 11031311. The next prime is 11031313. The reversal of 11031312 is 21313011.

It is an interprime number because it is at equal distance from previous prime (11031311) and next prime (11031313).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (11031311) 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, 114862 + ... + 114957.

It is an arithmetic number, because the mean of its divisors is an integer number (1424884).

Almost surely, 2^11031312 is an apocalyptic number.

11031312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11031312 is an abundant number, since it is smaller than the sum of its proper divisors (17466368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11031312 is a wasteful number, since it uses less digits than its factorization.

11031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229830 (or 229824 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 11031312 is about 3321.3418974866. The cubic root of 11031312 is about 222.6088311590.

Adding to 11031312 its reverse (21313011), we get a palindrome (32344323).

It can be divided in two parts, 1103 and 1312, that added together give a triangular number (2415 = T₆₉).

The spelling of 11031312 in words is "eleven million, thirty-one thousand, three hundred twelve".