20131322545 has 8 divisors (see below), whose sum is σ = 24180319296. Its totient is φ = 16089903216.

The previous prime is 20131322527. The next prime is 20131322569. The reversal of 20131322545 is 54522313102.

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 20131322545 - 2¹⁷ = 20131191473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1888507 + ... + 1899136.

It is an arithmetic number, because the mean of its divisors is an integer number (3022539912).

Almost surely, 2^20131322545 is an apocalyptic number.

It is an amenable number.

20131322545 is a deficient number, since it is larger than the sum of its proper divisors (4048996751).

20131322545 is a wasteful number, since it uses less digits than its factorization.

20131322545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788711.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20131322545 its reverse (54522313102), we get a palindrome (74653635647).

The spelling of 20131322545 in words is "twenty billion, one hundred thirty-one million, three hundred twenty-two thousand, five hundred forty-five".