20031311324 has 12 divisors (see below), whose sum is σ = 35264704944. Its totient is φ = 9955681344.

The previous prime is 20031311303. The next prime is 20031311351. The reversal of 20031311324 is 42311313002.

It is a junction number, because it is equal to n+sod(n) for n = 20031311296 and 20031311305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14992829 + ... + 14994164.

It is an arithmetic number, because the mean of its divisors is an integer number (2938725412).

Almost surely, 2^20031311324 is an apocalyptic number.

It is an amenable number.

20031311324 is a deficient number, since it is larger than the sum of its proper divisors (15233393620).

20031311324 is a wasteful number, since it uses less digits than its factorization.

20031311324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29987164 (or 29987162 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20031311324 its reverse (42311313002), we get a palindrome (62342624326).

The spelling of 20031311324 in words is "twenty billion, thirty-one million, three hundred eleven thousand, three hundred twenty-four".