20000231231 has 8 divisors (see below), whose sum is σ = 21121457280. Its totient is φ = 18885863448.

The previous prime is 20000231227. The next prime is 20000231239. The reversal of 20000231231 is 13213200002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20000231231 - 2² = 20000231227 is a prime.

It is a super-2 number, since 2×20000231231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000231239) 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 7 ways as a sum of consecutive naturals, for example, 1708571 + ... + 1720236.

It is an arithmetic number, because the mean of its divisors is an integer number (2640182160).

Almost surely, 2^20000231231 is an apocalyptic number.

20000231231 is a deficient number, since it is larger than the sum of its proper divisors (1121226049).

20000231231 is a wasteful number, since it uses less digits than its factorization.

20000231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429133.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20000231231 its reverse (13213200002), we get a palindrome (33213431233).

The spelling of 20000231231 in words is "twenty billion, two hundred thirty-one thousand, two hundred thirty-one".