20110031040 has 224 divisors, whose sum is σ = 70797968640. Its totient is φ = 4795084800.

The previous prime is 20110031033. The next prime is 20110031041. The reversal of 20110031040 is 4013001102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20110031041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 628551 + ... + 659769.

It is an arithmetic number, because the mean of its divisors is an integer number (316062360).

Almost surely, 2^20110031040 is an apocalyptic number.

20110031040 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 20110031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35398984320).

20110031040 is an abundant number, since it is smaller than the sum of its proper divisors (50687937600).

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

20110031040 is a wasteful number, since it uses less digits than its factorization.

20110031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31311 (or 31301 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20110031040 its reverse (4013001102), we get a palindrome (24123032142).

The spelling of 20110031040 in words is "twenty billion, one hundred ten million, thirty-one thousand, forty".