11311401436 has 12 divisors (see below), whose sum is σ = 19804674960. Its totient is φ = 5652922880.

The previous prime is 11311401391. The next prime is 11311401443. The reversal of 11311401436 is 63410411311.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11311401436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685285 + ... + 701596.

It is an arithmetic number, because the mean of its divisors is an integer number (1650389580).

Almost surely, 2^11311401436 is an apocalyptic number.

It is an amenable number.

11311401436 is a deficient number, since it is larger than the sum of its proper divisors (8493273524).

11311401436 is a wasteful number, since it uses less digits than its factorization.

11311401436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388924 (or 1388922 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 11311401436 its reverse (63410411311), we get a palindrome (74721812747).

The spelling of 11311401436 in words is "eleven billion, three hundred eleven million, four hundred one thousand, four hundred thirty-six".