20310030231 has 16 divisors (see below), whose sum is σ = 27842938368. Its totient is φ = 13161009600.

The previous prime is 20310030187. The next prime is 20310030233. The reversal of 20310030231 is 13203001302.

It is a de Polignac number, because none of the positive numbers 2^k-20310030231 is a prime.

It is a super-2 number, since 2×20310030231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20310030231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310030233) 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, 271321 + ... + 337986.

It is an arithmetic number, because the mean of its divisors is an integer number (1740183648).

Almost surely, 2^20310030231 is an apocalyptic number.

20310030231 is a deficient number, since it is larger than the sum of its proper divisors (7532908137).

20310030231 is a wasteful number, since it uses less digits than its factorization.

20310030231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609622.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20310030231 its reverse (13203001302), we get a palindrome (33513031533).

The spelling of 20310030231 in words is "twenty billion, three hundred ten million, thirty thousand, two hundred thirty-one".