1311032213 has 4 divisors (see below), whose sum is σ = 1317896448. Its totient is φ = 1304167980.

The previous prime is 1311032183. The next prime is 1311032237. The reversal of 1311032213 is 3122301131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3122301131 = 39989 ⋅78079.

It is a cyclic number.

It is not a de Polignac number, because 1311032213 - 2¹⁴ = 1311015829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311032191 and 1311032200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311032273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3431831 + ... + 3432212.

It is an arithmetic number, because the mean of its divisors is an integer number (329474112).

Almost surely, 2^1311032213 is an apocalyptic number.

It is an amenable number.

1311032213 is a deficient number, since it is larger than the sum of its proper divisors (6864235).

1311032213 is an equidigital number, since it uses as much as digits as its factorization.

1311032213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864234.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311032213 is about 36208.1788136327. The cubic root of 1311032213 is about 1094.4714929721.

Adding to 1311032213 its reverse (3122301131), we get a palindrome (4433333344).

The spelling of 1311032213 in words is "one billion, three hundred eleven million, thirty-two thousand, two hundred thirteen".