11213111313 has 14 divisors (see below), whose sum is σ = 16811977314. Its totient is φ = 7475407056.

The previous prime is 11213111309. The next prime is 11213111387. The reversal of 11213111313 is 31311131211.

It can be written as a sum of positive squares in only one way, i.e., 10643429889 + 569681424 = 103167^2 + 23868^2 .

It is not a de Polignac number, because 11213111313 - 2² = 11213111309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11213110313) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7690020 + ... + 7691477.

Almost surely, 2^11213111313 is an apocalyptic number.

It is an amenable number.

11213111313 is a deficient number, since it is larger than the sum of its proper divisors (5598866001).

11213111313 is an frugal number, since it uses more digits than its factorization.

11213111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15381515 (or 15381500 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 11213111313 its reverse (31311131211), we get a palindrome (42524242524).

The spelling of 11213111313 in words is "eleven billion, two hundred thirteen million, one hundred eleven thousand, three hundred thirteen".