130999997 has 2 divisors, whose sum is σ = 130999998. Its totient is φ = 130999996.

The previous prime is 130999987. The next prime is 131000021. The reversal of 130999997 is 799999031.

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., 81522841 + 49477156 = 9029^2 + 7034^2 .

It is a cyclic number.

It is not a de Polignac number, because 130999997 - 2¹² = 130995901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130999907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65499998 + 65499999.

It is an arithmetic number, because the mean of its divisors is an integer number (65499999).

Almost surely, 2^130999997 is an apocalyptic number.

It is an amenable number.

130999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

130999997 is an equidigital number, since it uses as much as digits as its factorization.

130999997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1240029, while the sum is 56.

The square root of 130999997 is about 11445.5230112040. The cubic root of 130999997 is about 507.8753039364.

The spelling of 130999997 in words is "one hundred thirty million, nine hundred ninety-nine thousand, nine hundred ninety-seven".