4331311989 has 4 divisors (see below), whose sum is σ = 5775082656. Its totient is φ = 2887541324.

The previous prime is 4331311967. The next prime is 4331312039. The reversal of 4331311989 is 9891131334.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4331311989 - 2¹⁹ = 4330787701 is a prime.

It is a super-2 number, since 2×4331311989² = 37520527092110272242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4331311989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4331311489) 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, 721885329 + ... + 721885334.

It is an arithmetic number, because the mean of its divisors is an integer number (1443770664).

Almost surely, 2^4331311989 is an apocalyptic number.

It is an amenable number.

4331311989 is a deficient number, since it is larger than the sum of its proper divisors (1443770667).

4331311989 is a wasteful number, since it uses less digits than its factorization.

4331311989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443770666.

The product of its digits is 69984, while the sum is 42.

The square root of 4331311989 is about 65812.7038572341. The cubic root of 4331311989 is about 1630.0708801526.

The spelling of 4331311989 in words is "four billion, three hundred thirty-one million, three hundred eleven thousand, nine hundred eighty-nine".