11031211312 has 40 divisors (see below), whose sum is σ = 23350661712. Its totient is φ = 5006726400.

The previous prime is 11031211291. The next prime is 11031211327. The reversal of 11031211312 is 21311213011.

It is a happy number.

It is a super-2 number, since 2×11031211312² (a number of 21 digits) contains 22 as substring.

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

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, 72862 + ... + 165442.

Almost surely, 2^11031211312 is an apocalyptic number.

It is an amenable number.

11031211312 is an abundant number, since it is smaller than the sum of its proper divisors (12319450400).

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

11031211312 is a wasteful number, since it uses less digits than its factorization.

11031211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93277 (or 93271 counting only the distinct ones).

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

Adding to 11031211312 its reverse (21311213011), we get a palindrome (32342424323).

The spelling of 11031211312 in words is "eleven billion, thirty-one million, two hundred eleven thousand, three hundred twelve".