1313231212 has 6 divisors (see below), whose sum is σ = 2298154628. Its totient is φ = 656615604.

The previous prime is 1313231177. The next prime is 1313231233. The reversal of 1313231212 is 2121323131.

It is a self number, because there is not a number n which added to its sum of digits gives 1313231212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164153898 + ... + 164153905.

Almost surely, 2^1313231212 is an apocalyptic number.

It is an amenable number.

1313231212 is a deficient number, since it is larger than the sum of its proper divisors (984923416).

1313231212 is a wasteful number, since it uses less digits than its factorization.

1313231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328307807 (or 328307805 counting only the distinct ones).

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

The square root of 1313231212 is about 36238.5321446661. The cubic root of 1313231212 is about 1095.0830714761.

Adding to 1313231212 its reverse (2121323131), we get a palindrome (3434554343).

It can be divided in two parts, 13132 and 31212, that added together give a palindrome (44344).

The spelling of 1313231212 in words is "one billion, three hundred thirteen million, two hundred thirty-one thousand, two hundred twelve".