321145351340 has 48 divisors (see below), whose sum is σ = 778992155424. Its totient is φ = 109910707200.

The previous prime is 321145351259. The next prime is 321145351369. The reversal of 321145351340 is 43153541123.

It is a super-3 number, since 3×321145351340³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321145351297 and 321145351306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42930131 + ... + 42937610.

It is an arithmetic number, because the mean of its divisors is an integer number (16229003238).

Almost surely, 2^321145351340 is an apocalyptic number.

It is an amenable number.

321145351340 is an abundant number, since it is smaller than the sum of its proper divisors (457846804084).

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

321145351340 is a wasteful number, since it uses less digits than its factorization.

321145351340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85867778 (or 85867776 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 321145351340 its reverse (43153541123), we get a palindrome (364298892463).

The spelling of 321145351340 in words is "three hundred twenty-one billion, one hundred forty-five million, three hundred fifty-one thousand, three hundred forty".