20311471353 has 32 divisors (see below), whose sum is σ = 27684633600. Its totient is φ = 13244003136.

The previous prime is 20311471307. The next prime is 20311471421. The reversal of 20311471353 is 35317411302.

It is not a de Polignac number, because 20311471353 - 2⁶ = 20311471289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20311471353.

It is not an unprimeable number, because it can be changed into a prime (20311471253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8682658 + ... + 8684996.

It is an arithmetic number, because the mean of its divisors is an integer number (865144800).

Almost surely, 2^20311471353 is an apocalyptic number.

It is an amenable number.

20311471353 is a deficient number, since it is larger than the sum of its proper divisors (7373162247).

20311471353 is a wasteful number, since it uses less digits than its factorization.

20311471353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781.

The product of its (nonzero) digits is 7560, while the sum is 30.

Adding to 20311471353 its reverse (35317411302), we get a palindrome (55628882655).

The spelling of 20311471353 in words is "twenty billion, three hundred eleven million, four hundred seventy-one thousand, three hundred fifty-three".