11111312 has 10 divisors (see below), whose sum is σ = 21528198. Its totient is φ = 5555648.

The previous prime is 11111311. The next prime is 11111327. The reversal of 11111312 is 21311111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9709456 + 1401856 = 3116^2 + 1184^2 .

It is a super-2 number, since 2×11111312² = 246922508722688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111293 and 11111302.

It is not an unprimeable number, because it can be changed into a prime (11111311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347213 + ... + 347244.

Almost surely, 2^11111312 is an apocalyptic number.

It is an amenable number.

11111312 is a deficient number, since it is larger than the sum of its proper divisors (10416886).

11111312 is an equidigital number, since it uses as much as digits as its factorization.

11111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694465 (or 694459 counting only the distinct ones).

The product of its digits is 6, while the sum is 11.

The square root of 11111312 is about 3333.3634665305. The cubic root of 11111312 is about 223.1456615024.

Adding to 11111312 its reverse (21311111), we get a palindrome (32422423).

The spelling of 11111312 in words is "eleven million, one hundred eleven thousand, three hundred twelve".