321134134549 has 4 divisors (see below), whose sum is σ = 326398628620. Its totient is φ = 315869640480.

The previous prime is 321134134523. The next prime is 321134134577. The reversal of 321134134549 is 945431431123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945431431123 = 1201 ⋅787203523.

It can be written as a sum of positive squares in 2 ways, for example, as 51506302500 + 269627832049 = 226950^2 + 519257^2 .

It is a cyclic number.

It is not a de Polignac number, because 321134134549 - 2⁹ = 321134134037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321134134649) 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, 2632246944 + ... + 2632247065.

It is an arithmetic number, because the mean of its divisors is an integer number (81599657155).

Almost surely, 2^321134134549 is an apocalyptic number.

It is an amenable number.

321134134549 is a deficient number, since it is larger than the sum of its proper divisors (5264494071).

321134134549 is an equidigital number, since it uses as much as digits as its factorization.

321134134549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264494070.

The product of its digits is 155520, while the sum is 40.

The spelling of 321134134549 in words is "three hundred twenty-one billion, one hundred thirty-four million, one hundred thirty-four thousand, five hundred forty-nine".