20030323231 has 16 divisors (see below), whose sum is σ = 20505187584. Its totient is φ = 19559314944.

The previous prime is 20030323217. The next prime is 20030323249. The reversal of 20030323231 is 13232303002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20030323231 - 2⁵ = 20030323199 is a prime.

It is a super-2 number, since 2×20030323231² (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 = 20030323199 and 20030323208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030323211) 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, 12781810 + ... + 12783376.

It is an arithmetic number, because the mean of its divisors is an integer number (1281574224).

Almost surely, 2^20030323231 is an apocalyptic number.

20030323231 is a deficient number, since it is larger than the sum of its proper divisors (474864353).

20030323231 is a wasteful number, since it uses less digits than its factorization.

20030323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20030323231 its reverse (13232303002), we get a palindrome (33262626233).

The spelling of 20030323231 in words is "twenty billion, thirty million, three hundred twenty-three thousand, two hundred thirty-one".