20234213345 has 4 divisors (see below), whose sum is σ = 24281056020. Its totient is φ = 16187370672.

The previous prime is 20234213339. The next prime is 20234213423. The reversal of 20234213345 is 54331243202.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15563311009 + 4670902336 = 124753^2 + 68344^2 .

It is a cyclic number.

It is not a de Polignac number, because 20234213345 - 2⁸ = 20234213089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023421330 + ... + 2023421339.

It is an arithmetic number, because the mean of its divisors is an integer number (6070264005).

Almost surely, 2^20234213345 is an apocalyptic number.

It is an amenable number.

20234213345 is a deficient number, since it is larger than the sum of its proper divisors (4046842675).

20234213345 is an equidigital number, since it uses as much as digits as its factorization.

20234213345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046842674.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 20234213345 its reverse (54331243202), we get a palindrome (74565456547).

The spelling of 20234213345 in words is "twenty billion, two hundred thirty-four million, two hundred thirteen thousand, three hundred forty-five".