2031405420 has 96 divisors (see below), whose sum is σ = 6274920960. Its totient is φ = 486914560.

The previous prime is 2031405403. The next prime is 2031405421. The reversal of 2031405420 is 245041302.

It is not an unprimeable number, because it can be changed into a prime (2031405421) 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, 41449 + ... + 76031.

It is an arithmetic number, because the mean of its divisors is an integer number (65363760).

Almost surely, 2^2031405420 is an apocalyptic number.

2031405420 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 2031405420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3137460480).

2031405420 is an abundant number, since it is smaller than the sum of its proper divisors (4243515540).

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

2031405420 is a wasteful number, since it uses less digits than its factorization.

2031405420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34695 (or 34693 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2031405420 is about 45071.1151404089. The cubic root of 2031405420 is about 1266.4815545124.

Adding to 2031405420 its reverse (245041302), we get a palindrome (2276446722).

The spelling of 2031405420 in words is "two billion, thirty-one million, four hundred five thousand, four hundred twenty".