2131847136 has 144 divisors (see below), whose sum is σ = 6200839008. Its totient is φ = 694579200.

The previous prime is 2131847129. The next prime is 2131847147. The reversal of 2131847136 is 6317481312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×2131847136² = 9089544422542804992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2131847136.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2800996 + ... + 2801756.

It is an arithmetic number, because the mean of its divisors is an integer number (43061382).

Almost surely, 2^2131847136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131847136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3100419504).

2131847136 is an abundant number, since it is smaller than the sum of its proper divisors (4068991872).

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

2131847136 is a wasteful number, since it uses less digits than its factorization.

2131847136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 974 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 2131847136 is about 46171.9301740787. The cubic root of 2131847136 is about 1287.0201709138.

The spelling of 2131847136 in words is "two billion, one hundred thirty-one million, eight hundred forty-seven thousand, one hundred thirty-six".