20000431024 has 40 divisors (see below), whose sum is σ = 44339662080. Its totient is φ = 8561356608.

The previous prime is 20000430979. The next prime is 20000431051. The reversal of 20000431024 is 42013400002.

It is a super-2 number, since 2×20000431024² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20000430989 and 20000431007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12454 + ... + 200389.

It is an arithmetic number, because the mean of its divisors is an integer number (1108491552).

Almost surely, 2^20000431024 is an apocalyptic number.

It is an amenable number.

20000431024 is an abundant number, since it is smaller than the sum of its proper divisors (24339231056).

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

20000431024 is a wasteful number, since it uses less digits than its factorization.

20000431024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213697 (or 213691 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20000431024 its reverse (42013400002), we get a palindrome (62013831026).

The spelling of 20000431024 in words is "twenty billion, four hundred thirty-one thousand, twenty-four".