131230842389 has 8 divisors (see below), whose sum is σ = 138953948760. Its totient is φ = 123508141056.

The previous prime is 131230842367. The next prime is 131230842419. The reversal of 131230842389 is 983248032131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8205279889 + 123025562500 = 90583^2 + 350750^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131230842389 - 2¹² = 131230838293 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 (131230842889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790007 + ... + 941579.

It is an arithmetic number, because the mean of its divisors is an integer number (17369243595).

Almost surely, 2^131230842389 is an apocalyptic number.

It is an amenable number.

131230842389 is a deficient number, since it is larger than the sum of its proper divisors (7723106371).

131230842389 is a wasteful number, since it uses less digits than its factorization.

131230842389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202519.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 131230842389 in words is "one hundred thirty-one billion, two hundred thirty million, eight hundred forty-two thousand, three hundred eighty-nine".