11311312202 has 16 divisors (see below), whose sum is σ = 18150237000. Its totient is φ = 5268092928.

The previous prime is 11311312141. The next prime is 11311312213. The reversal of 11311312202 is 20221311311.

It can be written as a sum of positive squares in 4 ways, for example, as 10261487401 + 1049824801 = 101299^2 + 32401^2 .

It is a super-2 number, since 2×11311312202² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1711577 + ... + 1718172.

Almost surely, 2^11311312202 is an apocalyptic number.

11311312202 is a deficient number, since it is larger than the sum of its proper divisors (6838924798).

11311312202 is a wasteful number, since it uses less digits than its factorization.

11311312202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429865.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11311312202 its reverse (20221311311), we get a palindrome (31532623513).

The spelling of 11311312202 in words is "eleven billion, three hundred eleven million, three hundred twelve thousand, two hundred two".