7131489973 has 4 divisors (see below), whose sum is σ = 7198139520. Its totient is φ = 7064840428.

The previous prime is 7131489941. The next prime is 7131489977. The reversal of 7131489973 is 3799841317.

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 7131489973 - 2⁵ = 7131489941 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 7131489973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131489977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33324613 + ... + 33324826.

It is an arithmetic number, because the mean of its divisors is an integer number (1799534880).

Almost surely, 2^7131489973 is an apocalyptic number.

It is an amenable number.

7131489973 is a deficient number, since it is larger than the sum of its proper divisors (66649547).

7131489973 is a wasteful number, since it uses less digits than its factorization.

7131489973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66649546.

The product of its digits is 1143072, while the sum is 52.

The square root of 7131489973 is about 84448.1496126469. The cubic root of 7131489973 is about 1924.8346378896.

The spelling of 7131489973 in words is "seven billion, one hundred thirty-one million, four hundred eighty-nine thousand, nine hundred seventy-three".