1311113202 has 128 divisors (see below), whose sum is σ = 3370844160. Its totient is φ = 330946560.

The previous prime is 1311113173. The next prime is 1311113233. The reversal of 1311113202 is 2023111131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1722502 + ... + 1723262.

It is an arithmetic number, because the mean of its divisors is an integer number (26334720).

Almost surely, 2^1311113202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311113202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685422080).

1311113202 is an abundant number, since it is smaller than the sum of its proper divisors (2059730958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311113202 is a wasteful number, since it uses less digits than its factorization.

1311113202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1311113202 is about 36209.2971762778. The cubic root of 1311113202 is about 1094.4940294960.

Adding to 1311113202 its reverse (2023111131), we get a palindrome (3334224333).

The spelling of 1311113202 in words is "one billion, three hundred eleven million, one hundred thirteen thousand, two hundred two".