91613230 has 16 divisors (see below), whose sum is σ = 165013200. Its totient is φ = 36620992.

The previous prime is 91613227. The next prime is 91613237. The reversal of 91613230 is 3231619.

It is a super-2 number, since 2×91613230² = 16785967822065800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91613195 and 91613204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91613237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26121 + ... + 29419.

It is an arithmetic number, because the mean of its divisors is an integer number (10313325).

Almost surely, 2^91613230 is an apocalyptic number.

91613230 is a deficient number, since it is larger than the sum of its proper divisors (73399970).

91613230 is a wasteful number, since it uses less digits than its factorization.

91613230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6083.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 91613230 is about 9571.4800318446. The cubic root of 91613230 is about 450.8022397351.

Adding to 91613230 its reverse (3231619), we get a palindrome (94844849).

The spelling of 91613230 in words is "ninety-one million, six hundred thirteen thousand, two hundred thirty".