7031889 has 6 divisors (see below), whose sum is σ = 10157186. Its totient is φ = 4687920.

The previous prime is 7031867. The next prime is 7031909. The reversal of 7031889 is 9881307.

It can be written as a sum of positive squares in only one way, i.e., 6671889 + 360000 = 2583^2 + 600^2 .

It is not a de Polignac number, because 7031889 - 2¹⁶ = 6966353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7031819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 390652 + ... + 390669.

Almost surely, 2^7031889 is an apocalyptic number.

It is an amenable number.

7031889 is a deficient number, since it is larger than the sum of its proper divisors (3125297).

7031889 is a wasteful number, since it uses less digits than its factorization.

7031889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781327 (or 781324 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 7031889 is about 2651.7709177076. The cubic root of 7031889 is about 191.5831614394.

It can be divided in two parts, 70318 and 89, that added together give a palindrome (70407).

The spelling of 7031889 in words is "seven million, thirty-one thousand, eight hundred eighty-nine".