11311312156 has 6 divisors (see below), whose sum is σ = 19794796280. Its totient is φ = 5655656076.

The previous prime is 11311312141. The next prime is 11311312213. The reversal of 11311312156 is 65121311311.

It is a self number, because there is not a number n which added to its sum of digits gives 11311312156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1413914016 + ... + 1413914023.

Almost surely, 2^11311312156 is an apocalyptic number.

It is an amenable number.

11311312156 is a deficient number, since it is larger than the sum of its proper divisors (8483484124).

11311312156 is a wasteful number, since it uses less digits than its factorization.

11311312156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827828043 (or 2827828041 counting only the distinct ones).

The product of its digits is 540, while the sum is 25.

Adding to 11311312156 its reverse (65121311311), we get a palindrome (76432623467).

The spelling of 11311312156 in words is "eleven billion, three hundred eleven million, three hundred twelve thousand, one hundred fifty-six".