20354311316 has 24 divisors (see below), whose sum is σ = 36874444320. Its totient is φ = 9819253472.

The previous prime is 20354311267. The next prime is 20354311331. The reversal of 20354311316 is 61311345302.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent 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, 104051 + ... + 227013.

It is an arithmetic number, because the mean of its divisors is an integer number (1536435180).

Almost surely, 2^20354311316 is an apocalyptic number.

It is an amenable number.

20354311316 is a deficient number, since it is larger than the sum of its proper divisors (16520133004).

20354311316 is a wasteful number, since it uses less digits than its factorization.

20354311316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124423 (or 124421 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 20354311316 its reverse (61311345302), we get a palindrome (81665656618).

The spelling of 20354311316 in words is "twenty billion, three hundred fifty-four million, three hundred eleven thousand, three hundred sixteen".