20351340322 has 8 divisors (see below), whose sum is σ = 32322717036. Its totient is φ = 9577101312.

The previous prime is 20351340313. The next prime is 20351340323. The reversal of 20351340322 is 22304315302.

It can be written as a sum of positive squares in 2 ways, for example, as 20229657361 + 121682961 = 142231^2 + 11031^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20351340323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299284383 + ... + 299284450.

Almost surely, 2^20351340322 is an apocalyptic number.

20351340322 is a deficient number, since it is larger than the sum of its proper divisors (11971376714).

20351340322 is a wasteful number, since it uses less digits than its factorization.

20351340322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598568852.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20351340322 its reverse (22304315302), we get a palindrome (42655655624).

The spelling of 20351340322 in words is "twenty billion, three hundred fifty-one million, three hundred forty thousand, three hundred twenty-two".