2031210400 has 72 divisors (see below), whose sum is σ = 5026764204. Its totient is φ = 801331200.

The previous prime is 2031210359. The next prime is 2031210449. The reversal of 2031210400 is 40121302.

It can be written as a sum of positive squares in 6 ways, for example, as 641710224 + 1389500176 = 25332^2 + 37276^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41010 + ... + 75790.

Almost surely, 2^2031210400 is an apocalyptic number.

2031210400 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 2031210400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2513382102).

2031210400 is an abundant number, since it is smaller than the sum of its proper divisors (2995553804).

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

2031210400 is a wasteful number, since it uses less digits than its factorization.

2031210400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34874 (or 34861 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2031210400 is about 45068.9516186032. The cubic root of 2031210400 is about 1266.4410247500.

Adding to 2031210400 its reverse (40121302), we get a palindrome (2071331702).

The spelling of 2031210400 in words is "two billion, thirty-one million, two hundred ten thousand, four hundred".