1321013213 has 8 divisors (see below), whose sum is σ = 1436443008. Its totient is φ = 1207556784.

The previous prime is 1321013207. The next prime is 1321013231. The reversal of 1321013213 is 3123101231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321013213 - 2²⁴ = 1304235997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321013191 and 1321013200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321013263) 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, 491945 + ... + 494622.

It is an arithmetic number, because the mean of its divisors is an integer number (179555376).

Almost surely, 2^1321013213 is an apocalyptic number.

1321013213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1321013213 is a deficient number, since it is larger than the sum of its proper divisors (115429795).

1321013213 is a wasteful number, since it uses less digits than its factorization.

1321013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986683.

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

The square root of 1321013213 is about 36345.7454594069. The cubic root of 1321013213 is about 1097.2419092750.

Adding to 1321013213 its reverse (3123101231), we get a palindrome (4444114444).

The spelling of 1321013213 in words is "one billion, three hundred twenty-one million, thirteen thousand, two hundred thirteen".