20321450315 has 8 divisors (see below), whose sum is σ = 24386520960. Its totient is φ = 16256639872.

The previous prime is 20321450309. The next prime is 20321450329. The reversal of 20321450315 is 51305412302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20321450315 - 2⁸ = 20321450059 is a prime.

It is a super-2 number, since 2×20321450315² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 221651 + ... + 299619.

It is an arithmetic number, because the mean of its divisors is an integer number (3048315120).

Almost surely, 2^20321450315 is an apocalyptic number.

20321450315 is a deficient number, since it is larger than the sum of its proper divisors (4065070645).

20321450315 is an equidigital number, since it uses as much as digits as its factorization.

20321450315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130101.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20321450315 its reverse (51305412302), we get a palindrome (71626862617).

The spelling of 20321450315 in words is "twenty billion, three hundred twenty-one million, four hundred fifty thousand, three hundred fifteen".