20342010523 has 4 divisors (see below), whose sum is σ = 20346628680. Its totient is φ = 20337392368.

The previous prime is 20342010511. The next prime is 20342010541. The reversal of 20342010523 is 32501024302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20342010523 - 2⁹ = 20342010011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20342010494 and 20342010503.

It is not an unprimeable number, because it can be changed into a prime (20342010583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2302465 + ... + 2311282.

It is an arithmetic number, because the mean of its divisors is an integer number (5086657170).

Almost surely, 2^20342010523 is an apocalyptic number.

20342010523 is a deficient number, since it is larger than the sum of its proper divisors (4618157).

20342010523 is an equidigital number, since it uses as much as digits as its factorization.

20342010523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618156.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20342010523 its reverse (32501024302), we get a palindrome (52843034825).

The spelling of 20342010523 in words is "twenty billion, three hundred forty-two million, ten thousand, five hundred twenty-three".