20314447231 has 4 divisors (see below), whose sum is σ = 21877097032. Its totient is φ = 18751797432.

The previous prime is 20314447187. The next prime is 20314447247. The reversal of 20314447231 is 13274441302.

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

It is a cyclic number.

It is not a de Polignac number, because 20314447231 - 2¹³ = 20314439039 is a prime.

It is a super-2 number, since 2×20314447231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20314447193 and 20314447202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314447261) 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, 781324881 + ... + 781324906.

It is an arithmetic number, because the mean of its divisors is an integer number (5469274258).

Almost surely, 2^20314447231 is an apocalyptic number.

20314447231 is a deficient number, since it is larger than the sum of its proper divisors (1562649801).

20314447231 is a wasteful number, since it uses less digits than its factorization.

20314447231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562649800.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 20314447231 its reverse (13274441302), we get a palindrome (33588888533).

The spelling of 20314447231 in words is "twenty billion, three hundred fourteen million, four hundred forty-seven thousand, two hundred thirty-one".