20031432430 has 16 divisors (see below), whose sum is σ = 36823740480. Its totient is φ = 7842092512.

The previous prime is 20031432413. The next prime is 20031432433. The reversal of 20031432430 is 3423413002.

It is a happy number.

It is a super-3 number, since 3×20031432430³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031432433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21309565 + ... + 21310504.

It is an arithmetic number, because the mean of its divisors is an integer number (2301483780).

Almost surely, 2^20031432430 is an apocalyptic number.

20031432430 is a deficient number, since it is larger than the sum of its proper divisors (16792308050).

20031432430 is a wasteful number, since it uses less digits than its factorization.

20031432430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42620123.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20031432430 its reverse (3423413002), we get a palindrome (23454845432).

The spelling of 20031432430 in words is "twenty billion, thirty-one million, four hundred thirty-two thousand, four hundred thirty".