2131154214 has 64 divisors (see below), whose sum is σ = 4937318400. Its totient is φ = 600680448.

The previous prime is 2131154213. The next prime is 2131154219. The reversal of 2131154214 is 4124511312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131154213) 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, 1665627 + ... + 1666905.

It is an arithmetic number, because the mean of its divisors is an integer number (77145600).

Almost surely, 2^2131154214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131154214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2468659200).

2131154214 is an abundant number, since it is smaller than the sum of its proper divisors (2806164186).

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

2131154214 is a wasteful number, since it uses less digits than its factorization.

2131154214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797.

The product of its digits is 960, while the sum is 24.

The square root of 2131154214 is about 46164.4258493485. The cubic root of 2131154214 is about 1286.8807141933.

Adding to 2131154214 its reverse (4124511312), we get a palindrome (6255665526).

The spelling of 2131154214 in words is "two billion, one hundred thirty-one million, one hundred fifty-four thousand, two hundred fourteen".