20345234043023 has 8 divisors (see below), whose sum is σ = 22284840534480. Its totient is φ = 18488163998080.

The previous prime is 20345234042983. The next prime is 20345234043047. The reversal of 20345234043023 is 32034043254302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20345234043023 - 2¹⁶ = 20345233977487 is a prime.

It is a super-2 number, since 2×20345234043023² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345234043053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20634111113 + ... + 20634112098.

It is an arithmetic number, because the mean of its divisors is an integer number (2785605066810).

Almost surely, 2^{20345234043023} is an apocalyptic number.

20345234043023 is a deficient number, since it is larger than the sum of its proper divisors (1939606491457).

20345234043023 is a wasteful number, since it uses less digits than its factorization.

20345234043023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41268223257.

The product of its (nonzero) digits is 207360, while the sum is 35.

Adding to 20345234043023 its reverse (32034043254302), we get a palindrome (52379277297325).

The spelling of 20345234043023 in words is "twenty trillion, three hundred forty-five billion, two hundred thirty-four million, forty-three thousand, twenty-three".