1321533193 has 8 divisors (see below), whose sum is σ = 1371790080. Its totient is φ = 1271753040.

The previous prime is 1321533133. The next prime is 1321533223. The reversal of 1321533193 is 3913351231.

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 1321533193 - 2¹³ = 1321525001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321533133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113530 + ... + 124627.

It is an arithmetic number, because the mean of its divisors is an integer number (171473760).

Almost surely, 2^1321533193 is an apocalyptic number.

It is an amenable number.

1321533193 is a deficient number, since it is larger than the sum of its proper divisors (50256887).

1321533193 is a wasteful number, since it uses less digits than its factorization.

1321533193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238367.

The product of its digits is 7290, while the sum is 31.

The square root of 1321533193 is about 36352.8980000220. The cubic root of 1321533193 is about 1097.3858566126.

The spelling of 1321533193 in words is "one billion, three hundred twenty-one million, five hundred thirty-three thousand, one hundred ninety-three".