20330031040 has 112 divisors (see below), whose sum is σ = 53079091200. Its totient is φ = 7355335680.

The previous prime is 20330030999. The next prime is 20330031041. The reversal of 20330031040 is 4013003302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330031041) 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, 685969 + ... + 714991.

Almost surely, 2^20330031040 is an apocalyptic number.

20330031040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20330031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26539545600).

20330031040 is an abundant number, since it is smaller than the sum of its proper divisors (32749060160).

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

20330031040 is a wasteful number, since it uses less digits than its factorization.

20330031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29250 (or 29240 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20330031040 its reverse (4013003302), we get a palindrome (24343034342).

The spelling of 20330031040 in words is "twenty billion, three hundred thirty million, thirty-one thousand, forty".