1111001312 has 48 divisors (see below), whose sum is σ = 2265604992. Its totient is φ = 535733760.

The previous prime is 1111001293. The next prime is 1111001321. The reversal of 1111001312 is 2131001111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1111001293 and 1111001302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312698 + ... + 316230.

It is an arithmetic number, because the mean of its divisors is an integer number (47200104).

Almost surely, 2^1111001312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111001312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132802496).

1111001312 is an abundant number, since it is smaller than the sum of its proper divisors (1154603680).

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

1111001312 is a wasteful number, since it uses less digits than its factorization.

1111001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891 (or 3883 counting only the distinct ones).

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

The square root of 1111001312 is about 33331.6863059762. The cubic root of 1111001312 is about 1035.7100503907.

Adding to 1111001312 its reverse (2131001111), we get a palindrome (3242002423).

The spelling of 1111001312 in words is "one billion, one hundred eleven million, one thousand, three hundred twelve".