321315005104531 has 16 divisors (see below), whose sum is σ = 323979170393088. Its totient is φ = 318655525478400.

The previous prime is 321315005104529. The next prime is 321315005104549. The reversal of 321315005104531 is 135401500513123.

It is a cyclic number.

It is not a de Polignac number, because 321315005104531 - 2¹ = 321315005104529 is a prime.

It is a super-2 number, since 2×321315005104531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321315005104571) 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, 1394838421 + ... + 1395068761.

It is an arithmetic number, because the mean of its divisors is an integer number (20248698149568).

Almost surely, 2^{321315005104531} is an apocalyptic number.

321315005104531 is a deficient number, since it is larger than the sum of its proper divisors (2664165288557).

321315005104531 is a wasteful number, since it uses less digits than its factorization.

321315005104531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240462.

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 321315005104531 its reverse (135401500513123), we get a palindrome (456716505617654).

The spelling of 321315005104531 in words is "three hundred twenty-one trillion, three hundred fifteen billion, five million, one hundred four thousand, five hundred thirty-one".