7131573389 has 4 divisors (see below), whose sum is σ = 7551077724. Its totient is φ = 6712069056.

The previous prime is 7131573377. The next prime is 7131573391. The reversal of 7131573389 is 9833751317.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6066073225 + 1065500164 = 77885^2 + 32642^2 .

It is a cyclic number.

It is not a de Polignac number, because 7131573389 - 2¹² = 7131569293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131573329) 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, 209752142 + ... + 209752175.

It is an arithmetic number, because the mean of its divisors is an integer number (1887769431).

Almost surely, 2^7131573389 is an apocalyptic number.

It is an amenable number.

7131573389 is a deficient number, since it is larger than the sum of its proper divisors (419504335).

7131573389 is a wasteful number, since it uses less digits than its factorization.

7131573389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419504334.

The product of its digits is 476280, while the sum is 47.

The square root of 7131573389 is about 84448.6435000587. The cubic root of 7131573389 is about 1924.8421426972.

The spelling of 7131573389 in words is "seven billion, one hundred thirty-one million, five hundred seventy-three thousand, three hundred eighty-nine".