131380789 has 2 divisors, whose sum is σ = 131380790. Its totient is φ = 131380788.

The previous prime is 131380757. The next prime is 131380813. The reversal of 131380789 is 987083131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103734225 + 27646564 = 10185^2 + 5258^2 .

It is a cyclic number.

It is not a de Polignac number, because 131380789 - 2⁵ = 131380757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131380489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65690394 + 65690395.

It is an arithmetic number, because the mean of its divisors is an integer number (65690395).

Almost surely, 2^131380789 is an apocalyptic number.

It is an amenable number.

131380789 is a deficient number, since it is larger than the sum of its proper divisors (1).

131380789 is an equidigital number, since it uses as much as digits as its factorization.

131380789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 131380789 is about 11462.1459160142. The cubic root of 131380789 is about 508.3669267656.

The spelling of 131380789 in words is "one hundred thirty-one million, three hundred eighty thousand, seven hundred eighty-nine".