1313021212 has 6 divisors (see below), whose sum is σ = 2297787128. Its totient is φ = 656510604.

The previous prime is 1313021209. The next prime is 1313021221. The reversal of 1313021212 is 2121203131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164127648 + ... + 164127655.

Almost surely, 2^1313021212 is an apocalyptic number.

It is an amenable number.

1313021212 is a deficient number, since it is larger than the sum of its proper divisors (984765916).

1313021212 is a wasteful number, since it uses less digits than its factorization.

1313021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328255307 (or 328255305 counting only the distinct ones).

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

The square root of 1313021212 is about 36235.6345604710. The cubic root of 1313021212 is about 1095.0246964538.

Adding to 1313021212 its reverse (2121203131), we get a palindrome (3434224343).

The spelling of 1313021212 in words is "one billion, three hundred thirteen million, twenty-one thousand, two hundred twelve".