20324431230 has 64 divisors (see below), whose sum is σ = 49344691968. Its totient is φ = 5357281280.

The previous prime is 20324431189. The next prime is 20324431241. The reversal of 20324431230 is 3213442302.

It is a self number, because there is not a number n which added to its sum of digits gives 20324431230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 999949 + ... + 1020071.

It is an arithmetic number, because the mean of its divisors is an integer number (771010812).

Almost surely, 2^20324431230 is an apocalyptic number.

20324431230 is an abundant number, since it is smaller than the sum of its proper divisors (29020260738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20324431230 is a wasteful number, since it uses less digits than its factorization.

20324431230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20521.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20324431230 its reverse (3213442302), we get a palindrome (23537873532).

The spelling of 20324431230 in words is "twenty billion, three hundred twenty-four million, four hundred thirty-one thousand, two hundred thirty".