20311057224 has 96 divisors (see below), whose sum is σ = 59599631520. Its totient is φ = 6223891968.

The previous prime is 20311057201. The next prime is 20311057229. The reversal of 20311057224 is 42275011302.

It is not an unprimeable number, because it can be changed into a prime (20311057229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140322 + ... + 245585.

It is an arithmetic number, because the mean of its divisors is an integer number (620829495).

Almost surely, 2^20311057224 is an apocalyptic number.

20311057224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20311057224 is an abundant number, since it is smaller than the sum of its proper divisors (39288574296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311057224 is a wasteful number, since it uses less digits than its factorization.

20311057224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385979 (or 385972 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 20311057224 its reverse (42275011302), we get a palindrome (62586068526).

The spelling of 20311057224 in words is "twenty billion, three hundred eleven million, fifty-seven thousand, two hundred twenty-four".