20302434321 has 16 divisors (see below), whose sum is σ = 29326786944. Its totient is φ = 12418988544.

The previous prime is 20302434319. The next prime is 20302434323. The reversal of 20302434321 is 12343420302.

It is an interprime number because it is at equal distance from previous prime (20302434319) and next prime (20302434323).

It is not a de Polignac number, because 20302434321 - 2¹ = 20302434319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20302434291 and 20302434300.

It is not an unprimeable number, because it can be changed into a prime (20302434323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1552096 + ... + 1565121.

It is an arithmetic number, because the mean of its divisors is an integer number (1832924184).

Almost surely, 2^20302434321 is an apocalyptic number.

It is an amenable number.

20302434321 is a deficient number, since it is larger than the sum of its proper divisors (9024352623).

20302434321 is a wasteful number, since it uses less digits than its factorization.

20302434321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117400.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20302434321 its reverse (12343420302), we get a palindrome (32645854623).

The spelling of 20302434321 in words is "twenty billion, three hundred two million, four hundred thirty-four thousand, three hundred twenty-one".