2142031100 has 72 divisors (see below), whose sum is σ = 5088091008. Its totient is φ = 776260800.

The previous prime is 2142031097. The next prime is 2142031123. The reversal of 2142031100 is 11302412.

It is a congruent 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, 334529 + ... + 340871.

Almost surely, 2^2142031100 is an apocalyptic number.

2142031100 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 2142031100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544045504).

2142031100 is an abundant number, since it is smaller than the sum of its proper divisors (2946059908).

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

2142031100 is a wasteful number, since it uses less digits than its factorization.

2142031100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675 (or 6668 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2142031100 is about 46282.0818460017. The cubic root of 2142031100 is about 1289.0663075174.

Adding to 2142031100 its reverse (11302412), we get a palindrome (2153333512).

The spelling of 2142031100 in words is "two billion, one hundred forty-two million, thirty-one thousand, one hundred".