11031011312 has 20 divisors (see below), whose sum is σ = 21665361840. Its totient is φ = 5439950208.

The previous prime is 11031011281. The next prime is 11031011353. The reversal of 11031011312 is 21311013011.

It is a happy number.

It is a super-2 number, since 2×11031011312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4721012 + ... + 4723347.

It is an arithmetic number, because the mean of its divisors is an integer number (1083268092).

Almost surely, 2^11031011312 is an apocalyptic number.

It is an amenable number.

11031011312 is a deficient number, since it is larger than the sum of its proper divisors (10634350528).

11031011312 is an equidigital number, since it uses as much as digits as its factorization.

11031011312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444440 (or 9444434 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11031011312 its reverse (21311013011), we get a palindrome (32342024323).

The spelling of 11031011312 in words is "eleven billion, thirty-one million, eleven thousand, three hundred twelve".