4006722131 has 4 divisors (see below), whose sum is σ = 4135971264. Its totient is φ = 3877473000.

The previous prime is 4006722113. The next prime is 4006722151. The reversal of 4006722131 is 1312276004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4006722131 - 2¹⁰ = 4006721107 is a prime.

It is a super-2 number, since 2×4006722131² = 32107644470090362322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4006722131.

It is not an unprimeable number, because it can be changed into a prime (4006722151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64624520 + ... + 64624581.

It is an arithmetic number, because the mean of its divisors is an integer number (1033992816).

Almost surely, 2^4006722131 is an apocalyptic number.

4006722131 is a deficient number, since it is larger than the sum of its proper divisors (129249133).

4006722131 is a wasteful number, since it uses less digits than its factorization.

4006722131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129249132.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 4006722131 is about 63298.6740066488. The cubic root of 4006722131 is about 1588.2897807931.

Adding to 4006722131 its reverse (1312276004), we get a palindrome (5318998135).

The spelling of 4006722131 in words is "four billion, six million, seven hundred twenty-two thousand, one hundred thirty-one".