11811311002 has 16 divisors (see below), whose sum is σ = 17870617800. Its totient is φ = 5854635072.

The previous prime is 11811310997. The next prime is 11811311009. The reversal of 11811311002 is 20011311811.

It can be written as a sum of positive squares in 4 ways, for example, as 11789399241 + 21911761 = 108579^2 + 4681^2 .

It is not an unprimeable number, because it can be changed into a prime (11811311009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71848 + ... + 169660.

Almost surely, 2^11811311002 is an apocalyptic number.

11811311002 is a deficient number, since it is larger than the sum of its proper divisors (6059306798).

11811311002 is a wasteful number, since it uses less digits than its factorization.

11811311002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98337.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11811311002 its reverse (20011311811), we get a palindrome (31822622813).

The spelling of 11811311002 in words is "eleven billion, eight hundred eleven million, three hundred eleven thousand, two".