11311001012 has 48 divisors (see below), whose sum is σ = 20622336000. Its totient is φ = 5424797664.

The previous prime is 11311000991. The next prime is 11311001021. The reversal of 11311001012 is 21010011311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11311000984 and 11311001002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2061689 + ... + 2067167.

It is an arithmetic number, because the mean of its divisors is an integer number (429632000).

Almost surely, 2^11311001012 is an apocalyptic number.

It is an amenable number.

11311001012 is a deficient number, since it is larger than the sum of its proper divisors (9311334988).

11311001012 is a wasteful number, since it uses less digits than its factorization.

11311001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748 (or 5746 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 11311001012 its reverse (21010011311), we get a palindrome (32321012323).

The spelling of 11311001012 in words is "eleven billion, three hundred eleven million, one thousand, twelve".