20313423042 has 16 divisors (see below), whose sum is σ = 44320195872. Its totient is φ = 6155582720.

The previous prime is 20313423019. The next prime is 20313423047. The reversal of 20313423042 is 24032431302.

It is not an unprimeable number, because it can be changed into a prime (20313423047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153889503 + ... + 153889634.

It is an arithmetic number, because the mean of its divisors is an integer number (2770012242).

Almost surely, 2^20313423042 is an apocalyptic number.

20313423042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20313423042 is an abundant number, since it is smaller than the sum of its proper divisors (24006772830).

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

20313423042 is a wasteful number, since it uses less digits than its factorization.

20313423042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307779153.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20313423042 its reverse (24032431302), we get a palindrome (44345854344).

The spelling of 20313423042 in words is "twenty billion, three hundred thirteen million, four hundred twenty-three thousand, forty-two".