1111321312 has 24 divisors (see below), whose sum is σ = 2191781592. Its totient is φ = 554678400.

The previous prime is 1111321259. The next prime is 1111321313. The reversal of 1111321312 is 2131231111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111321313) 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, 12139 + ... + 48682.

It is an arithmetic number, because the mean of its divisors is an integer number (91324233).

Almost surely, 2^1111321312 is an apocalyptic number.

It is an amenable number.

1111321312 is a deficient number, since it is larger than the sum of its proper divisors (1080460280).

1111321312 is an equidigital number, since it uses as much as digits as its factorization.

1111321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61402 (or 61394 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 1111321312 is about 33336.4861975584. The cubic root of 1111321312 is about 1035.8094788365.

Adding to 1111321312 its reverse (2131231111), we get a palindrome (3242552423).

The spelling of 1111321312 in words is "one billion, one hundred eleven million, three hundred twenty-one thousand, three hundred twelve".