4001020131 has 8 divisors (see below), whose sum is σ = 5566636800. Its totient is φ = 2551375112.

The previous prime is 4001020117. The next prime is 4001020181. The reversal of 4001020131 is 1310201004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4001020131 - 2¹⁷ = 4000889059 is a prime.

It is a super-2 number, since 2×4001020131² = 32016324177334514322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4001020181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28992831 + ... + 28992968.

It is an arithmetic number, because the mean of its divisors is an integer number (695829600).

Almost surely, 2^4001020131 is an apocalyptic number.

4001020131 is a deficient number, since it is larger than the sum of its proper divisors (1565616669).

4001020131 is a wasteful number, since it uses less digits than its factorization.

4001020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57985825.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 4001020131 is about 63253.6175329127. The cubic root of 4001020131 is about 1587.5359869165.

Adding to 4001020131 its reverse (1310201004), we get a palindrome (5311221135).

The spelling of 4001020131 in words is "four billion, one million, twenty thousand, one hundred thirty-one".