20354311315 has 16 divisors (see below), whose sum is σ = 26471587968. Its totient is φ = 14935130496.

The previous prime is 20354311267. The next prime is 20354311331. The reversal of 20354311315 is 51311345302.

It is a happy number.

It is not a de Polignac number, because 20354311315 - 2²⁷ = 20220093587 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 987067 + ... + 1007476.

It is an arithmetic number, because the mean of its divisors is an integer number (1654474248).

Almost surely, 2^20354311315 is an apocalyptic number.

20354311315 is a deficient number, since it is larger than the sum of its proper divisors (6117276653).

20354311315 is a wasteful number, since it uses less digits than its factorization.

20354311315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994718.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 20354311315 its reverse (51311345302), we get a palindrome (71665656617).

The spelling of 20354311315 in words is "twenty billion, three hundred fifty-four million, three hundred eleven thousand, three hundred fifteen".