13311231202 has 4 divisors (see below), whose sum is σ = 19966846806. Its totient is φ = 6655615600.

The previous prime is 13311231179. The next prime is 13311231203. The reversal of 13311231202 is 20213211331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20213211331 = 33377 ⋅605603.

It can be written as a sum of positive squares in only one way, i.e., 9886523761 + 3424707441 = 99431^2 + 58521^2 .

It is a super-2 number, since 2×13311231202² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13311231202.

It is not an unprimeable number, because it can be changed into a prime (13311231203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327807799 + ... + 3327807802.

Almost surely, 2^13311231202 is an apocalyptic number.

13311231202 is a deficient number, since it is larger than the sum of its proper divisors (6655615604).

13311231202 is an equidigital number, since it uses as much as digits as its factorization.

13311231202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6655615603.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13311231202 its reverse (20213211331), we get a palindrome (33524442533).

The spelling of 13311231202 in words is "thirteen billion, three hundred eleven million, two hundred thirty-one thousand, two hundred two".