9131039541121 has 3 divisors (see below), whose sum is σ = 9131042562883. Its totient is φ = 9131036519360.

The previous prime is 9131039541109. The next prime is 9131039541149. The reversal of 9131039541121 is 1211459301319.

It is a happy number.

The square root of 9131039541121 is 3021761.

It is a perfect power (a square), and thus also a powerful number.

9131039541121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 3314260301121 + 5816779240000 = 1820511^2 + 2411800^2 .

It is not a de Polignac number, because 9131039541121 - 2¹⁹ = 9131039016833 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9131039541721) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1510881 + ... + 4532641.

Almost surely, 2^{9131039541121} is an apocalyptic number.

9131039541121 is the 3021761-st square number.

9131039541121 is the 1510881-st centered octagonal number.

It is an amenable number.

9131039541121 is a deficient number, since it is larger than the sum of its proper divisors (3021762).

9131039541121 is an frugal number, since it uses more digits than its factorization.

9131039541121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6043522 (or 3021761 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 9131039541121 in words is "nine trillion, one hundred thirty-one billion, thirty-nine million, five hundred forty-one thousand, one hundred twenty-one".