3871989231 has 24 divisors (see below), whose sum is σ = 5678184960. Its totient is φ = 2345199120.

The previous prime is 3871989229. The next prime is 3871989307. The reversal of 3871989231 is 1329891783.

It is not a de Polignac number, because 3871989231 - 2¹ = 3871989229 is a prime.

It is a super-2 number, since 2×3871989231² = 29984601209959942722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871989221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 985036 + ... + 988958.

It is an arithmetic number, because the mean of its divisors is an integer number (236591040).

Almost surely, 2^3871989231 is an apocalyptic number.

3871989231 is a deficient number, since it is larger than the sum of its proper divisors (1806195729).

3871989231 is a wasteful number, since it uses less digits than its factorization.

3871989231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667 (or 6656 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 3871989231 is about 62225.3102121637. The cubic root of 3871989231 is about 1570.2834263216.

The spelling of 3871989231 in words is "three billion, eight hundred seventy-one million, nine hundred eighty-nine thousand, two hundred thirty-one".