321002243040431 has 2 divisors, whose sum is σ = 321002243040432. Its totient is φ = 321002243040430.

The previous prime is 321002243040419. The next prime is 321002243040433. The reversal of 321002243040431 is 134040342200123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321002243040431 - 2²² = 321002238846127 is a prime.

It is a super-2 number, since 2×321002243040431² (a number of 30 digits) contains 22 as substring.

Together with 321002243040433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 321002243040394 and 321002243040403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321002243040433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160501121520215 + 160501121520216.

It is an arithmetic number, because the mean of its divisors is an integer number (160501121520216).

Almost surely, 2^{321002243040431} is an apocalyptic number.

321002243040431 is a deficient number, since it is larger than the sum of its proper divisors (1).

321002243040431 is an equidigital number, since it uses as much as digits as its factorization.

321002243040431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 321002243040431 its reverse (134040342200123), we get a palindrome (455042585240554).

The spelling of 321002243040431 in words is "three hundred twenty-one trillion, two billion, two hundred forty-three million, forty thousand, four hundred thirty-one".