2131200342 has 64 divisors (see below), whose sum is σ = 5048568000. Its totient is φ = 664081920.

The previous prime is 2131200329. The next prime is 2131200349. The reversal of 2131200342 is 2430021312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131200349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128992 + ... + 144572.

It is an arithmetic number, because the mean of its divisors is an integer number (78883875).

Almost surely, 2^2131200342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131200342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2524284000).

2131200342 is an abundant number, since it is smaller than the sum of its proper divisors (2917367658).

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

2131200342 is a wasteful number, since it uses less digits than its factorization.

2131200342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15758 (or 15752 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2131200342 is about 46164.9254521222. The cubic root of 2131200342 is about 1286.8899988030.

Adding to 2131200342 its reverse (2430021312), we get a palindrome (4561221654).

The spelling of 2131200342 in words is "two billion, one hundred thirty-one million, two hundred thousand, three hundred forty-two".