11031313212 has 30 divisors (see below), whose sum is σ = 28838032608. Its totient is φ = 3677104296.

The previous prime is 11031313193. The next prime is 11031313213. The reversal of 11031313212 is 21231313011.

11031313212 is a `hidden beast` number, since 110 + 31 + 313 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031313213) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17023308 + ... + 17023955.

Almost surely, 2^11031313212 is an apocalyptic number.

11031313212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11031313212 is an abundant number, since it is smaller than the sum of its proper divisors (17806719396).

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

11031313212 is a wasteful number, since it uses less digits than its factorization.

11031313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34047279 (or 34047268 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11031313212 its reverse (21231313011), we get a palindrome (32262626223).

The spelling of 11031313212 in words is "eleven billion, thirty-one million, three hundred thirteen thousand, two hundred twelve".