1313021211 has 8 divisors (see below), whose sum is σ = 1791408960. Its totient is φ = 854990472.

The previous prime is 1313021209. The next prime is 1313021221. The reversal of 1313021211 is 1121203131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1313021211 - 2¹ = 1313021209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313021221) 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, 5089101 + ... + 5089358.

It is an arithmetic number, because the mean of its divisors is an integer number (223926120).

Almost surely, 2^1313021211 is an apocalyptic number.

1313021211 is a deficient number, since it is larger than the sum of its proper divisors (478387749).

1313021211 is a wasteful number, since it uses less digits than its factorization.

1313021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178505.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1313021211 is about 36235.6345466724. The cubic root of 1313021211 is about 1095.0246961758.

Adding to 1313021211 its reverse (1121203131), we get a palindrome (2434224342).

The spelling of 1313021211 in words is "one billion, three hundred thirteen million, twenty-one thousand, two hundred eleven".