13111023412 has 6 divisors (see below), whose sum is σ = 22944290978. Its totient is φ = 6555511704.

The previous prime is 13111023379. The next prime is 13111023427. The reversal of 13111023412 is 21432011131.

It can be written as a sum of positive squares in only one way, i.e., 12300140836 + 810882576 = 110906^2 + 28476^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13111023412.

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, 1638877923 + ... + 1638877930.

Almost surely, 2^13111023412 is an apocalyptic number.

It is an amenable number.

13111023412 is a deficient number, since it is larger than the sum of its proper divisors (9833267566).

13111023412 is a wasteful number, since it uses less digits than its factorization.

13111023412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277755857 (or 3277755855 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 13111023412 its reverse (21432011131), we get a palindrome (34543034543).

The spelling of 13111023412 in words is "thirteen billion, one hundred eleven million, twenty-three thousand, four hundred twelve".