20531304323 has 8 divisors (see below), whose sum is σ = 20732642448. Its totient is φ = 20330859744.

The previous prime is 20531304293. The next prime is 20531304337. The reversal of 20531304323 is 32340313502.

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 20531304323 - 2⁸ = 20531304067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20531304292 and 20531304301.

It is not an unprimeable number, because it can be changed into a prime (20531304383) 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, 177161 + ... + 269162.

It is an arithmetic number, because the mean of its divisors is an integer number (2591580306).

Almost surely, 2^20531304323 is an apocalyptic number.

20531304323 is a deficient number, since it is larger than the sum of its proper divisors (201338125).

20531304323 is a wasteful number, since it uses less digits than its factorization.

20531304323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446773.

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 20531304323 its reverse (32340313502), we get a palindrome (52871617825).

The spelling of 20531304323 in words is "twenty billion, five hundred thirty-one million, three hundred four thousand, three hundred twenty-three".