91130030 has 16 divisors (see below), whose sum is σ = 173683440. Its totient is φ = 34307712.

The previous prime is 91130021. The next prime is 91130051. The reversal of 91130030 is 3003119.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91129990 and 91130008.

It is a congruent number.

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, 267860 + ... + 268199.

It is an arithmetic number, because the mean of its divisors is an integer number (10855215).

Almost surely, 2^91130030 is an apocalyptic number.

91130030 is a deficient number, since it is larger than the sum of its proper divisors (82553410).

91130030 is a wasteful number, since it uses less digits than its factorization.

91130030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536083.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 91130030 is about 9546.2050051316. The cubic root of 91130030 is about 450.0082796830.

Adding to 91130030 its reverse (3003119), we get a palindrome (94133149).

The spelling of 91130030 in words is "ninety-one million, one hundred thirty thousand, thirty".