321213253245 has 16 divisors (see below), whose sum is σ = 513953709120. Its totient is φ = 171309567104.

The previous prime is 321213253241. The next prime is 321213253261. The reversal of 321213253245 is 542352312123.

It is a cyclic number.

It is not a de Polignac number, because 321213253245 - 2² = 321213253241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213253241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436801 + ... + 912809.

It is an arithmetic number, because the mean of its divisors is an integer number (32122106820).

Almost surely, 2^321213253245 is an apocalyptic number.

It is an amenable number.

321213253245 is a deficient number, since it is larger than the sum of its proper divisors (192740455875).

321213253245 is a wasteful number, since it uses less digits than its factorization.

321213253245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521004.

The product of its digits is 43200, while the sum is 33.

Adding to 321213253245 its reverse (542352312123), we get a palindrome (863565565368).

The spelling of 321213253245 in words is "three hundred twenty-one billion, two hundred thirteen million, two hundred fifty-three thousand, two hundred forty-five".