20313100242 has 32 divisors (see below), whose sum is σ = 45149664960. Its totient is φ = 6769617120.

The previous prime is 20313100211. The next prime is 20313100303. The reversal of 20313100242 is 24200131302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239317 + ... + 312887.

It is an arithmetic number, because the mean of its divisors is an integer number (1410927030).

Almost surely, 2^20313100242 is an apocalyptic number.

20313100242 is an abundant number, since it is smaller than the sum of its proper divisors (24836564718).

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

20313100242 is a wasteful number, since it uses less digits than its factorization.

20313100242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78695 (or 78689 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20313100242 its reverse (24200131302), we get a palindrome (44513231544).

The spelling of 20313100242 in words is "twenty billion, three hundred thirteen million, one hundred thousand, two hundred forty-two".