2131022147 has 4 divisors (see below), whose sum is σ = 2131114920. Its totient is φ = 2130929376.

The previous prime is 2131022123. The next prime is 2131022161. The reversal of 2131022147 is 7412201312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2131022147 - 2⁸ = 2131021891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131022447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16379 + ... + 67307.

It is an arithmetic number, because the mean of its divisors is an integer number (532778730).

Almost surely, 2^2131022147 is an apocalyptic number.

2131022147 is a deficient number, since it is larger than the sum of its proper divisors (92773).

2131022147 is an equidigital number, since it uses as much as digits as its factorization.

2131022147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92772.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2131022147 is about 46162.9954292396. The cubic root of 2131022147 is about 1286.8541311044.

Adding to 2131022147 its reverse (7412201312), we get a palindrome (9543223459).

The spelling of 2131022147 in words is "two billion, one hundred thirty-one million, twenty-two thousand, one hundred forty-seven".