321140235401 has 2 divisors, whose sum is σ = 321140235402. Its totient is φ = 321140235400.

The previous prime is 321140235379. The next prime is 321140235421. The reversal of 321140235401 is 104532041123.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177405228025 + 143735007376 = 421195^2 + 379124^2 .

It is a cyclic number.

It is not a de Polignac number, because 321140235401 - 2⁶ = 321140235337 is a prime.

It is not a weakly prime, because it can be changed into another prime (321140235421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160570117700 + 160570117701.

It is an arithmetic number, because the mean of its divisors is an integer number (160570117701).

Almost surely, 2^321140235401 is an apocalyptic number.

It is an amenable number.

321140235401 is a deficient number, since it is larger than the sum of its proper divisors (1).

321140235401 is an equidigital number, since it uses as much as digits as its factorization.

321140235401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 321140235401 its reverse (104532041123), we get a palindrome (425672276524).

The spelling of 321140235401 in words is "three hundred twenty-one billion, one hundred forty million, two hundred thirty-five thousand, four hundred one".