321213142024340 has 24 divisors (see below), whose sum is σ = 674561691794760. Its totient is φ = 128482572325248.

The previous prime is 321213142024309. The next prime is 321213142024343. The reversal of 321213142024340 is 43420241312123.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53446129790596 + 267767012233744 = 7310686^2 + 16363588^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321213142024297 and 321213142024306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213142024343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166798967 + ... + 168713726.

It is an arithmetic number, because the mean of its divisors is an integer number (28106737158115).

Almost surely, 2^{321213142024340} is an apocalyptic number.

It is an amenable number.

321213142024340 is an abundant number, since it is smaller than the sum of its proper divisors (353348549770420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321213142024340 is a wasteful number, since it uses less digits than its factorization.

321213142024340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335560571 (or 335560569 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 321213142024340 its reverse (43420241312123), we get a palindrome (364633383336463).

The spelling of 321213142024340 in words is "three hundred twenty-one trillion, two hundred thirteen billion, one hundred forty-two million, twenty-four thousand, three hundred forty".