130787081 has 2 divisors, whose sum is σ = 130787082. Its totient is φ = 130787080.

The previous prime is 130787077. The next prime is 130787099. The reversal of 130787081 is 180787031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116985856 + 13801225 = 10816^2 + 3715^2 .

It is a cyclic number.

It is not a de Polignac number, because 130787081 - 2² = 130787077 is a prime.

It is a super-2 number, since 2×130787081² = 34210521113001122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (130787281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65393540 + 65393541.

It is an arithmetic number, because the mean of its divisors is an integer number (65393541).

Almost surely, 2^130787081 is an apocalyptic number.

It is an amenable number.

130787081 is a deficient number, since it is larger than the sum of its proper divisors (1).

130787081 is an equidigital number, since it uses as much as digits as its factorization.

130787081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 130787081 is about 11436.2179500043. The cubic root of 130787081 is about 507.6000026185.

It can be divided in two parts, 1307 and 87081, that added together give a palindrome (88388).

The spelling of 130787081 in words is "one hundred thirty million, seven hundred eighty-seven thousand, eighty-one".