20342135023 has 16 divisors (see below), whose sum is σ = 23485524480. Its totient is φ = 17258937696.

The previous prime is 20342134987. The next prime is 20342135029. The reversal of 20342135023 is 32053124302.

It is not a de Polignac number, because 20342135023 - 2⁹ = 20342134511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342135029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253848 + ... + 324226.

It is an arithmetic number, because the mean of its divisors is an integer number (1467845280).

Almost surely, 2^20342135023 is an apocalyptic number.

20342135023 is a deficient number, since it is larger than the sum of its proper divisors (3143389457).

20342135023 is a wasteful number, since it uses less digits than its factorization.

20342135023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70806.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20342135023 its reverse (32053124302), we get a palindrome (52395259325).

The spelling of 20342135023 in words is "twenty billion, three hundred forty-two million, one hundred thirty-five thousand, twenty-three".