11131031312 has 40 divisors (see below), whose sum is σ = 21640802400. Its totient is φ = 5546351360.

The previous prime is 11131031293. The next prime is 11131031321. The reversal of 11131031312 is 21313013111.

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, 10610564 + ... + 10611612.

It is an arithmetic number, because the mean of its divisors is an integer number (541020060).

Almost surely, 2^11131031312 is an apocalyptic number.

It is an amenable number.

11131031312 is a deficient number, since it is larger than the sum of its proper divisors (10509771088).

11131031312 is a wasteful number, since it uses less digits than its factorization.

11131031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711 (or 2705 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11131031312 its reverse (21313013111), we get a palindrome (32444044423).

The spelling of 11131031312 in words is "eleven billion, one hundred thirty-one million, thirty-one thousand, three hundred twelve".