321140503043 has 2 divisors, whose sum is σ = 321140503044. Its totient is φ = 321140503042.

The previous prime is 321140503037. The next prime is 321140503111. The reversal of 321140503043 is 340305041123.

It is a weak prime.

It is an emirp because it is prime and its reverse (340305041123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321140503043 - 2⁶ = 321140502979 is a prime.

It is a super-2 number, since 2×321140503043² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321140508043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160570251521 + 160570251522.

It is an arithmetic number, because the mean of its divisors is an integer number (160570251522).

Almost surely, 2^321140503043 is an apocalyptic number.

321140503043 is a deficient number, since it is larger than the sum of its proper divisors (1).

321140503043 is an equidigital number, since it uses as much as digits as its factorization.

321140503043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 321140503043 its reverse (340305041123), we get a palindrome (661445544166).

The spelling of 321140503043 in words is "three hundred twenty-one billion, one hundred forty million, five hundred three thousand, forty-three".