321203340213031 has 2 divisors, whose sum is σ = 321203340213032. Its totient is φ = 321203340213030.

The previous prime is 321203340213029. The next prime is 321203340213053. The reversal of 321203340213031 is 130312043302123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321203340213031 - 2¹ = 321203340213029 is a prime.

It is a super-2 number, since 2×321203340213031² (a number of 30 digits) contains 22 as substring.

Together with 321203340213029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321203340613031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160601670106515 + 160601670106516.

It is an arithmetic number, because the mean of its divisors is an integer number (160601670106516).

Almost surely, 2^{321203340213031} is an apocalyptic number.

321203340213031 is a deficient number, since it is larger than the sum of its proper divisors (1).

321203340213031 is an equidigital number, since it uses as much as digits as its factorization.

321203340213031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 321203340213031 its reverse (130312043302123), we get a palindrome (451515383515154).

The spelling of 321203340213031 in words is "three hundred twenty-one trillion, two hundred three billion, three hundred forty million, two hundred thirteen thousand, thirty-one".