3944231331 has 4 divisors (see below), whose sum is σ = 5258975112. Its totient is φ = 2629487552.

The previous prime is 3944231309. The next prime is 3944231377. The reversal of 3944231331 is 1331324493.

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 3944231331 - 2⁹ = 3944230819 is a prime.

It is a super-2 number, since 2×3944231331² = 31113921584884063122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3944231292 and 3944231301.

It is not an unprimeable number, because it can be changed into a prime (3944231231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657371886 + ... + 657371891.

It is an arithmetic number, because the mean of its divisors is an integer number (1314743778).

Almost surely, 2^3944231331 is an apocalyptic number.

3944231331 is a deficient number, since it is larger than the sum of its proper divisors (1314743781).

3944231331 is a wasteful number, since it uses less digits than its factorization.

3944231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314743780.

The product of its digits is 23328, while the sum is 33.

The square root of 3944231331 is about 62803.1156153897. The cubic root of 3944231331 is about 1579.9892285491.

The spelling of 3944231331 in words is "three billion, nine hundred forty-four million, two hundred thirty-one thousand, three hundred thirty-one".