130711561 has 2 divisors, whose sum is σ = 130711562. Its totient is φ = 130711560.

The previous prime is 130711549. The next prime is 130711571. The reversal of 130711561 is 165117031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100801600 + 29909961 = 10040^2 + 5469^2 .

It is a cyclic number.

It is not a de Polignac number, because 130711561 - 2⁷ = 130711433 is a prime.

It is not a weakly prime, because it can be changed into another prime (130711571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65355780 + 65355781.

It is an arithmetic number, because the mean of its divisors is an integer number (65355781).

Almost surely, 2^130711561 is an apocalyptic number.

It is an amenable number.

130711561 is a deficient number, since it is larger than the sum of its proper divisors (1).

130711561 is an equidigital number, since it uses as much as digits as its factorization.

130711561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 130711561 is about 11432.9156823620. The cubic root of 130711561 is about 507.5022831479.

Adding to 130711561 its reverse (165117031), we get a palindrome (295828592).

The spelling of 130711561 in words is "one hundred thirty million, seven hundred eleven thousand, five hundred sixty-one".