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130908961 is a prime number
BaseRepresentation
bin1111100110110…
…00001100100001
3100010022212100001
413303120030201
5232003041321
620553500001
73146464531
oct763301441
9303285301
10130908961
1167992927
1237a11601
1321176431
14135594c1
15b75cc91
hex7cd8321

130908961 has 2 divisors, whose sum is σ = 130908962. Its totient is φ = 130908960.

The previous prime is 130908937. The next prime is 130908971. The reversal of 130908961 is 169809031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85211361 + 45697600 = 9231^2 + 6760^2 .

It is a cyclic number.

It is not a de Polignac number, because 130908961 - 213 = 130900769 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130908961.

It is not a weakly prime, because it can be changed into another prime (130908931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65454480 + 65454481.

It is an arithmetic number, because the mean of its divisors is an integer number (65454481).

Almost surely, 2130908961 is an apocalyptic number.

It is an amenable number.

130908961 is a deficient number, since it is larger than the sum of its proper divisors (1).

130908961 is an equidigital number, since it uses as much as digits as its factorization.

130908961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 130908961 is about 11441.5453938705. The cubic root of 130908961 is about 507.7576305231.

The spelling of 130908961 in words is "one hundred thirty million, nine hundred eight thousand, nine hundred sixty-one".