321431132240243 has 4 divisors (see below), whose sum is σ = 335406398859408. Its totient is φ = 307455865621080.

The previous prime is 321431132240233. The next prime is 321431132240263. The reversal of 321431132240243 is 342042231134123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321431132240243 - 2³⁴ = 321413952371059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321431132240233) 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, 6987633309548 + ... + 6987633309593.

It is an arithmetic number, because the mean of its divisors is an integer number (83851599714852).

Almost surely, 2^{321431132240243} is an apocalyptic number.

321431132240243 is a deficient number, since it is larger than the sum of its proper divisors (13975266619165).

321431132240243 is a wasteful number, since it uses less digits than its factorization.

321431132240243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13975266619164.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 321431132240243 its reverse (342042231134123), we get a palindrome (663473363374366).

The spelling of 321431132240243 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, one hundred thirty-two million, two hundred forty thousand, two hundred forty-three".