4231881 has 6 divisors (see below), whose sum is σ = 6112730. Its totient is φ = 2821248.

The previous prime is 4231873. The next prime is 4231901. The reversal of 4231881 is 1881324.

It can be written as a sum of positive squares in only one way, i.e., 2433600 + 1798281 = 1560^2 + 1341^2 .

It is not a de Polignac number, because 4231881 - 2³ = 4231873 is a prime.

It is a super-2 number, since 2×4231881² = 35817633596322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

4231881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4231811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235096 + ... + 235113.

Almost surely, 2^4231881 is an apocalyptic number.

It is an amenable number.

4231881 is a deficient number, since it is larger than the sum of its proper divisors (1880849).

4231881 is a wasteful number, since it uses less digits than its factorization.

4231881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470215 (or 470212 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 4231881 is about 2057.1536160433. The cubic root of 4231881 is about 161.7500718650.

It can be divided in two parts, 423 and 1881, that added together give a square (2304 = 48²).

The spelling of 4231881 in words is "four million, two hundred thirty-one thousand, eight hundred eighty-one".