321105100340 has 24 divisors (see below), whose sum is σ = 674331370440. Its totient is φ = 128440009728.

The previous prime is 321105100297. The next prime is 321105100487. The reversal of 321105100340 is 43001501123.

It can be written as a sum of positive squares in 4 ways, for example, as 22860230416 + 298244869924 = 151196^2 + 546118^2 .

It is a super-2 number, since 2×321105100340² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2331644 + ... + 2465516.

It is an arithmetic number, because the mean of its divisors is an integer number (28097140435).

Almost surely, 2^321105100340 is an apocalyptic number.

It is an amenable number.

321105100340 is an abundant number, since it is smaller than the sum of its proper divisors (353226270100).

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

321105100340 is a wasteful number, since it uses less digits than its factorization.

321105100340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253811 (or 253809 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 321105100340 its reverse (43001501123), we get a palindrome (364106601463).

The spelling of 321105100340 in words is "three hundred twenty-one billion, one hundred five million, one hundred thousand, three hundred forty".