20431402030 has 24 divisors (see below), whose sum is σ = 39823102872. Its totient is φ = 7543901664.

The previous prime is 20431402027. The next prime is 20431402063. The reversal of 20431402030 is 3020413402.

It is a super-2 number, since 2×20431402030² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20431401989 and 20431402007.

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 11 ways as a sum of consecutive naturals, for example, 6043104 + ... + 6046483.

It is an arithmetic number, because the mean of its divisors is an integer number (1659295953).

Almost surely, 2^20431402030 is an apocalyptic number.

20431402030 is a deficient number, since it is larger than the sum of its proper divisors (19391700842).

20431402030 is a wasteful number, since it uses less digits than its factorization.

20431402030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12089620 (or 12089607 counting only the distinct ones).

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

Adding to 20431402030 its reverse (3020413402), we get a palindrome (23451815432).

The spelling of 20431402030 in words is "twenty billion, four hundred thirty-one million, four hundred two thousand, thirty".