320215312451 has 16 divisors (see below), whose sum is σ = 329252428800. Its totient is φ = 311343234048.

The previous prime is 320215312409. The next prime is 320215312457. The reversal of 320215312451 is 154213512023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320215312451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320215312457) by changing a digit.

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, 1151885 + ... + 1402593.

It is an arithmetic number, because the mean of its divisors is an integer number (20578276800).

Almost surely, 2^320215312451 is an apocalyptic number.

320215312451 is a deficient number, since it is larger than the sum of its proper divisors (9037116349).

320215312451 is a wasteful number, since it uses less digits than its factorization.

320215312451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251038.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 320215312451 its reverse (154213512023), we get a palindrome (474428824474).

The spelling of 320215312451 in words is "three hundred twenty billion, two hundred fifteen million, three hundred twelve thousand, four hundred fifty-one".