321136426073 has 4 divisors (see below), whose sum is σ = 322106627088. Its totient is φ = 320166225060.

The previous prime is 321136426069. The next prime is 321136426111. The reversal of 321136426073 is 370624631123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 370624631123 = 617 ⋅600688219.

It is a cyclic number.

It is not a de Polignac number, because 321136426073 - 2² = 321136426069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321136426043) 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, 485100011 + ... + 485100672.

It is an arithmetic number, because the mean of its divisors is an integer number (80526656772).

Almost surely, 2^321136426073 is an apocalyptic number.

It is an amenable number.

321136426073 is a deficient number, since it is larger than the sum of its proper divisors (970201015).

321136426073 is an equidigital number, since it uses as much as digits as its factorization.

321136426073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970201014.

The product of its (nonzero) digits is 108864, while the sum is 38.

The spelling of 321136426073 in words is "three hundred twenty-one billion, one hundred thirty-six million, four hundred twenty-six thousand, seventy-three".