1321342345534 has 16 divisors (see below), whose sum is σ = 1989133886880. Its totient is φ = 658298524000.

The previous prime is 1321342345489. The next prime is 1321342345537. The reversal of 1321342345534 is 4355432431231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321342345537) 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, 3123159 + ... + 3520909.

It is an arithmetic number, because the mean of its divisors is an integer number (124320867930).

Almost surely, 2^{1321342345534} is an apocalyptic number.

1321342345534 is a deficient number, since it is larger than the sum of its proper divisors (667791541346).

1321342345534 is a wasteful number, since it uses less digits than its factorization.

1321342345534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403715.

The product of its digits is 518400, while the sum is 40.

Adding to 1321342345534 its reverse (4355432431231), we get a palindrome (5676774776765).

The spelling of 1321342345534 in words is "one trillion, three hundred twenty-one billion, three hundred forty-two million, three hundred forty-five thousand, five hundred thirty-four".