2031231400 has 96 divisors (see below), whose sum is σ = 5455097280. Its totient is φ = 695168000.

The previous prime is 2031231359. The next prime is 2031231443. The reversal of 2031231400 is 41321302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10245 + ... + 64555.

It is an arithmetic number, because the mean of its divisors is an integer number (56823930).

Almost surely, 2^2031231400 is an apocalyptic number.

2031231400 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 2031231400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2727548640).

2031231400 is an abundant number, since it is smaller than the sum of its proper divisors (3423865880).

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

2031231400 is a wasteful number, since it uses less digits than its factorization.

2031231400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54355 (or 54346 counting only the distinct ones).

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

The square root of 2031231400 is about 45069.1845943545. The cubic root of 2031231400 is about 1266.4453891706.

Adding to 2031231400 its reverse (41321302), we get a palindrome (2072552702).

The spelling of 2031231400 in words is "two billion, thirty-one million, two hundred thirty-one thousand, four hundred".