20312203242 has 16 divisors (see below), whose sum is σ = 41722363872. Its totient is φ = 6587741520.

The previous prime is 20312203237. The next prime is 20312203259. The reversal of 20312203242 is 24230221302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45747984 + ... + 45748427.

It is an arithmetic number, because the mean of its divisors is an integer number (2607647742).

Almost surely, 2^20312203242 is an apocalyptic number.

20312203242 is an abundant number, since it is smaller than the sum of its proper divisors (21410160630).

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

20312203242 is a wasteful number, since it uses less digits than its factorization.

20312203242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91496453.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20312203242 its reverse (24230221302), we get a palindrome (44542424544).

The spelling of 20312203242 in words is "twenty billion, three hundred twelve million, two hundred three thousand, two hundred forty-two".