321215440134 has 16 divisors (see below), whose sum is σ = 659793877488. Its totient is φ = 104177980512.

The previous prime is 321215440099. The next prime is 321215440163. The reversal of 321215440134 is 431044512123.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723457977 + ... + 723458420.

It is an arithmetic number, because the mean of its divisors is an integer number (41237117343).

Almost surely, 2^321215440134 is an apocalyptic number.

321215440134 is an abundant number, since it is smaller than the sum of its proper divisors (338578437354).

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

321215440134 is a wasteful number, since it uses less digits than its factorization.

321215440134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446916439.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 321215440134 its reverse (431044512123), we get a palindrome (752259952257).

The spelling of 321215440134 in words is "three hundred twenty-one billion, two hundred fifteen million, four hundred forty thousand, one hundred thirty-four".