20205311234 has 8 divisors (see below), whose sum is σ = 30311357328. Its totient is φ = 10101525460.

The previous prime is 20205311209. The next prime is 20205311261. The reversal of 20205311234 is 43211350202.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542552 + ... + 578595.

It is an arithmetic number, because the mean of its divisors is an integer number (3788919666).

Almost surely, 2^20205311234 is an apocalyptic number.

20205311234 is a deficient number, since it is larger than the sum of its proper divisors (10106046094).

20205311234 is a wasteful number, since it uses less digits than its factorization.

20205311234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130160.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20205311234 its reverse (43211350202), we get a palindrome (63416661436).

The spelling of 20205311234 in words is "twenty billion, two hundred five million, three hundred eleven thousand, two hundred thirty-four".