31441189 has 4 divisors (see below), whose sum is σ = 33859756. Its totient is φ = 29022624.

The previous prime is 31441153. The next prime is 31441217. The reversal of 31441189 is 98114413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98114413 = 61 ⋅1608433.

It can be written as a sum of positive squares in 2 ways, for example, as 10510564 + 20930625 = 3242^2 + 4575^2 .

It is a cyclic number.

It is not a de Polignac number, because 31441189 - 2⁹ = 31440677 is a prime.

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 31441189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31441129) 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, 1209264 + ... + 1209289.

It is an arithmetic number, because the mean of its divisors is an integer number (8464939).

Almost surely, 2^31441189 is an apocalyptic number.

It is an amenable number.

31441189 is a deficient number, since it is larger than the sum of its proper divisors (2418567).

31441189 is a wasteful number, since it uses less digits than its factorization.

31441189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418566.

The product of its digits is 3456, while the sum is 31.

The square root of 31441189 is about 5607.2443321118. The cubic root of 31441189 is about 315.6213117106.

The spelling of 31441189 in words is "thirty-one million, four hundred forty-one thousand, one hundred eighty-nine".