20315305535234 has 4 divisors (see below), whose sum is σ = 30472958302854. Its totient is φ = 10157652767616.

The previous prime is 20315305535227. The next prime is 20315305535257. The reversal of 20315305535234 is 43253550351302.

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

It can be written as a sum of positive squares in only one way, i.e., 19706523275209 + 608782260025 = 4439203^2 + 780245^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20315305535191 and 20315305535200.

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 as a sum of consecutive naturals, namely, 5078826383807 + ... + 5078826383810.

Almost surely, 2^{20315305535234} is an apocalyptic number.

20315305535234 is a deficient number, since it is larger than the sum of its proper divisors (10157652767620).

20315305535234 is a wasteful number, since it uses less digits than its factorization.

20315305535234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157652767619.

The product of its (nonzero) digits is 810000, while the sum is 41.

Adding to 20315305535234 its reverse (43253550351302), we get a palindrome (63568855886536).

The spelling of 20315305535234 in words is "twenty trillion, three hundred fifteen billion, three hundred five million, five hundred thirty-five thousand, two hundred thirty-four".