321253305105 has 16 divisors (see below), whose sum is σ = 514520864064. Its totient is φ = 171163237440.

The previous prime is 321253305101. The next prime is 321253305187. The reversal of 321253305105 is 501503352123.

It is not a de Polignac number, because 321253305105 - 2² = 321253305101 is a prime.

It is a super-2 number, since 2×321253305105² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321253305101) 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, 10725711 + ... + 10755620.

It is an arithmetic number, because the mean of its divisors is an integer number (32157554004).

Almost surely, 2^321253305105 is an apocalyptic number.

It is an amenable number.

321253305105 is a deficient number, since it is larger than the sum of its proper divisors (193267558959).

321253305105 is a wasteful number, since it uses less digits than its factorization.

321253305105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21482336.

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 321253305105 its reverse (501503352123), we get a palindrome (822756657228).

The spelling of 321253305105 in words is "three hundred twenty-one billion, two hundred fifty-three million, three hundred five thousand, one hundred five".