20031030231 has 16 divisors (see below), whose sum is σ = 28141670400. Its totient is φ = 12638602368.

The previous prime is 20031030223. The next prime is 20031030241. The reversal of 20031030231 is 13203013002.

It is not a de Polignac number, because 20031030231 - 2³ = 20031030223 is a prime.

It is a super-2 number, since 2×20031030231² (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 20031030231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031030241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116631 + ... + 231656.

It is an arithmetic number, because the mean of its divisors is an integer number (1758854400).

Almost surely, 2^20031030231 is an apocalyptic number.

20031030231 is a deficient number, since it is larger than the sum of its proper divisors (8110640169).

20031030231 is a wasteful number, since it uses less digits than its factorization.

20031030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349318.

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

Adding to 20031030231 its reverse (13203013002), we get a palindrome (33234043233).

The spelling of 20031030231 in words is "twenty billion, thirty-one million, thirty thousand, two hundred thirty-one".