3981002131 has 8 divisors (see below), whose sum is σ = 4068396864. Its totient is φ = 3893719680.

The previous prime is 3981002111. The next prime is 3981002141. The reversal of 3981002131 is 1312001893.

3981002131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3981002131 - 2¹⁹ = 3980477843 is a prime.

It is a super-2 number, since 2×3981002131² = 31696755934053082322, 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 3981002131.

It is not an unprimeable number, because it can be changed into a prime (3981002101) 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, 45721 + ... + 100261.

It is an arithmetic number, because the mean of its divisors is an integer number (508549608).

Almost surely, 2^3981002131 is an apocalyptic number.

3981002131 is a deficient number, since it is larger than the sum of its proper divisors (87394733).

3981002131 is a wasteful number, since it uses less digits than its factorization.

3981002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56141.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 3981002131 is about 63095.1831045762. The cubic root of 3981002131 is about 1584.8839597002.

The spelling of 3981002131 in words is "three billion, nine hundred eighty-one million, two thousand, one hundred thirty-one".