20431213030 has 64 divisors (see below), whose sum is σ = 38750939136. Its totient is φ = 7741008000.

The previous prime is 20431213021. The next prime is 20431213043. The reversal of 20431213030 is 3031213402.

It is a junction number, because it is equal to n+sod(n) for n = 20431212989 and 20431213007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11280825 + ... + 11282635.

It is an arithmetic number, because the mean of its divisors is an integer number (605483424).

Almost surely, 2^20431213030 is an apocalyptic number.

20431213030 is a deficient number, since it is larger than the sum of its proper divisors (18319726106).

20431213030 is a wasteful number, since it uses less digits than its factorization.

20431213030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20431213030 its reverse (3031213402), we get a palindrome (23462426432).

The spelling of 20431213030 in words is "twenty billion, four hundred thirty-one million, two hundred thirteen thousand, thirty".