91000130 has 16 divisors (see below), whose sum is σ = 176400504. Its totient is φ = 33600000.

The previous prime is 91000081. The next prime is 91000163. The reversal of 91000130 is 3100019.

It can be written as a sum of positive squares in 4 ways, for example, as 74459641 + 16540489 = 8629^2 + 4067^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349871 + ... + 350130.

Almost surely, 2^91000130 is an apocalyptic number.

91000130 is a deficient number, since it is larger than the sum of its proper divisors (85400374).

91000130 is a wasteful number, since it uses less digits than its factorization.

91000130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700021.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 91000130 is about 9539.3988280185. The cubic root of 91000130 is about 449.7943587151.

Adding to 91000130 its reverse (3100019), we get a palindrome (94100149).

The spelling of 91000130 in words is "ninety-one million, one hundred thirty", and thus it is an aban number.