1321320134 has 8 divisors (see below), whose sum is σ = 1982250480. Its totient is φ = 660569976.

The previous prime is 1321320131. The next prime is 1321320139. The reversal of 1321320134 is 4310231231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321320131) 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 3 ways as a sum of consecutive naturals, for example, 24914 + ... + 57125.

It is an arithmetic number, because the mean of its divisors is an integer number (247781310).

Almost surely, 2^1321320134 is an apocalyptic number.

1321320134 is a deficient number, since it is larger than the sum of its proper divisors (660930346).

1321320134 is an equidigital number, since it uses as much as digits as its factorization.

1321320134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90094.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1321320134 is about 36349.9674552812. The cubic root of 1321320134 is about 1097.3268795344.

Adding to 1321320134 its reverse (4310231231), we get a palindrome (5631551365).

The spelling of 1321320134 in words is "one billion, three hundred twenty-one million, three hundred twenty thousand, one hundred thirty-four".