315451504513321 has 16 divisors (see below), whose sum is σ = 377990569175040. Its totient is φ = 259868516299920.

The previous prime is 315451504513267. The next prime is 315451504513351. The reversal of 315451504513321 is 123315405154513.

It is a happy number.

It is not a de Polignac number, because 315451504513321 - 2¹⁷ = 315451504382249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315451504513351) 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, 32811676545 + ... + 32811686158.

It is an arithmetic number, because the mean of its divisors is an integer number (23624410573440).

Almost surely, 2^{315451504513321} is an apocalyptic number.

It is an amenable number.

315451504513321 is a deficient number, since it is larger than the sum of its proper divisors (62539064661719).

315451504513321 is a wasteful number, since it uses less digits than its factorization.

315451504513321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65623362756.

The product of its (nonzero) digits is 540000, while the sum is 43.

Adding to 315451504513321 its reverse (123315405154513), we get a palindrome (438766909667834).

The spelling of 315451504513321 in words is "three hundred fifteen trillion, four hundred fifty-one billion, five hundred four million, five hundred thirteen thousand, three hundred twenty-one".