20312322531315 has 8 divisors (see below), whose sum is σ = 32499716050128. Its totient is φ = 10833238683360.

The previous prime is 20312322531311. The next prime is 20312322531329. The reversal of 20312322531315 is 51313522321302.

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

It is not a de Polignac number, because 20312322531315 - 2² = 20312322531311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20312322531311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677077417696 + ... + 677077417725.

It is an arithmetic number, because the mean of its divisors is an integer number (4062464506266).

Almost surely, 2^{20312322531315} is an apocalyptic number.

20312322531315 is a deficient number, since it is larger than the sum of its proper divisors (12187393518813).

20312322531315 is a wasteful number, since it uses less digits than its factorization.

20312322531315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354154835429.

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 20312322531315 its reverse (51313522321302), we get a palindrome (71625844852617).

The spelling of 20312322531315 in words is "twenty trillion, three hundred twelve billion, three hundred twenty-two million, five hundred thirty-one thousand, three hundred fifteen".