20431204030 has 32 divisors (see below), whose sum is σ = 37096166304. Its totient is φ = 8101627776.

The previous prime is 20431203983. The next prime is 20431204039. The reversal of 20431204030 is 3040213402.

It is a junction number, because it is equal to n+sod(n) for n = 20431203989 and 20431204007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431204039) 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, 631324 + ... + 662896.

It is an arithmetic number, because the mean of its divisors is an integer number (1159255197).

Almost surely, 2^20431204030 is an apocalyptic number.

20431204030 is a deficient number, since it is larger than the sum of its proper divisors (16664962274).

20431204030 is a wasteful number, since it uses less digits than its factorization.

20431204030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32140.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20431204030 its reverse (3040213402), we get a palindrome (23471417432).

The spelling of 20431204030 in words is "twenty billion, four hundred thirty-one million, two hundred four thousand, thirty".