131981583389 has 2 divisors, whose sum is σ = 131981583390. Its totient is φ = 131981583388.

The previous prime is 131981583379. The next prime is 131981583427. The reversal of 131981583389 is 983385189131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81771977764 + 50209605625 = 285958^2 + 224075^2 .

It is an emirp because it is prime and its reverse (983385189131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131981583389 - 2³² = 127686616093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131981583319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65990791694 + 65990791695.

It is an arithmetic number, because the mean of its divisors is an integer number (65990791695).

Almost surely, 2^131981583389 is an apocalyptic number.

It is an amenable number.

131981583389 is a deficient number, since it is larger than the sum of its proper divisors (1).

131981583389 is an equidigital number, since it uses as much as digits as its factorization.

131981583389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 59.

The spelling of 131981583389 in words is "one hundred thirty-one billion, nine hundred eighty-one million, five hundred eighty-three thousand, three hundred eighty-nine".