20313400234 has 32 divisors (see below), whose sum is σ = 31119469056. Its totient is φ = 9942931440.

The previous prime is 20313400207. The next prime is 20313400241. The reversal of 20313400234 is 43200431302.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17346469 + ... + 17347639.

It is an arithmetic number, because the mean of its divisors is an integer number (972483408).

Almost surely, 2^20313400234 is an apocalyptic number.

20313400234 is a deficient number, since it is larger than the sum of its proper divisors (10806068822).

20313400234 is a wasteful number, since it uses less digits than its factorization.

20313400234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20313400234 its reverse (43200431302), we get a palindrome (63513831536).

The spelling of 20313400234 in words is "twenty billion, three hundred thirteen million, four hundred thousand, two hundred thirty-four".