20310143644334 has 4 divisors (see below), whose sum is σ = 30465215466504. Its totient is φ = 10155071822166.

The previous prime is 20310143644333. The next prime is 20310143644451. The reversal of 20310143644334 is 43344634101302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310143644333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077535911082 + ... + 5077535911085.

It is an arithmetic number, because the mean of its divisors is an integer number (7616303866626).

Almost surely, 2^{20310143644334} is an apocalyptic number.

20310143644334 is a deficient number, since it is larger than the sum of its proper divisors (10155071822170).

20310143644334 is a wasteful number, since it uses less digits than its factorization.

20310143644334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10155071822169.

The product of its (nonzero) digits is 248832, while the sum is 38.

Adding to 20310143644334 its reverse (43344634101302), we get a palindrome (63654777745636).

The spelling of 20310143644334 in words is "twenty trillion, three hundred ten billion, one hundred forty-three million, six hundred forty-four thousand, three hundred thirty-four".