1311312202 has 16 divisors (see below), whose sum is σ = 2053268352. Its totient is φ = 626911120.

The previous prime is 1311312193. The next prime is 1311312209. The reversal of 1311312202 is 2022131131.

It is a super-2 number, since 2×1311312202² = 3439079382228177608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311312209) 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, 204627 + ... + 210937.

It is an arithmetic number, because the mean of its divisors is an integer number (128329272).

Almost surely, 2^1311312202 is an apocalyptic number.

1311312202 is a deficient number, since it is larger than the sum of its proper divisors (741956150).

1311312202 is a wasteful number, since it uses less digits than its factorization.

1311312202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10853.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311312202 is about 36212.0449850599. The cubic root of 1311312202 is about 1094.5494005840.

Adding to 1311312202 its reverse (2022131131), we get a palindrome (3333443333).

The spelling of 1311312202 in words is "one billion, three hundred eleven million, three hundred twelve thousand, two hundred two".