2031130420 has 192 divisors, whose sum is σ = 5197167360. Its totient is φ = 658022400.

The previous prime is 2031130399. The next prime is 2031130421. The reversal of 2031130420 is 240311302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2031130394 and 2031130403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031130421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6615907 + ... + 6616213.

It is an arithmetic number, because the mean of its divisors is an integer number (27068580).

Almost surely, 2^2031130420 is an apocalyptic number.

2031130420 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 2031130420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598583680).

2031130420 is an abundant number, since it is smaller than the sum of its proper divisors (3166036940).

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

2031130420 is a wasteful number, since it uses less digits than its factorization.

2031130420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2031130420 is about 45068.0643027854. The cubic root of 2031130420 is about 1266.4244022667.

Adding to 2031130420 its reverse (240311302), we get a palindrome (2271441722).

The spelling of 2031130420 in words is "two billion, thirty-one million, one hundred thirty thousand, four hundred twenty".