20320140310 has 8 divisors (see below), whose sum is σ = 36576252576. Its totient is φ = 8128056120.

The previous prime is 20320140283. The next prime is 20320140319. The reversal of 20320140310 is 1304102302.

It is a happy number.

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

It is a super-2 number, since 2×20320140310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320140319) 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, 1016007006 + ... + 1016007025.

It is an arithmetic number, because the mean of its divisors is an integer number (4572031572).

Almost surely, 2^20320140310 is an apocalyptic number.

20320140310 is a deficient number, since it is larger than the sum of its proper divisors (16256112266).

20320140310 is a wasteful number, since it uses less digits than its factorization.

20320140310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032014038.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20320140310 its reverse (1304102302), we get a palindrome (21624242612).

The spelling of 20320140310 in words is "twenty billion, three hundred twenty million, one hundred forty thousand, three hundred ten".