20311423242 has 24 divisors (see below), whose sum is σ = 44651560128. Its totient is φ = 6154976520.

The previous prime is 20311423229. The next prime is 20311423277. The reversal of 20311423242 is 24232411302.

It is a happy number.

20311423242 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13987858 + ... + 13989309.

It is an arithmetic number, because the mean of its divisors is an integer number (1860481672).

Almost surely, 2^20311423242 is an apocalyptic number.

20311423242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20311423242 is an abundant number, since it is smaller than the sum of its proper divisors (24340136886).

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

20311423242 is a wasteful number, since it uses less digits than its factorization.

20311423242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27977194 (or 27977183 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20311423242 its reverse (24232411302), we get a palindrome (44543834544).

The spelling of 20311423242 in words is "twenty billion, three hundred eleven million, four hundred twenty-three thousand, two hundred forty-two".