91232141 has 16 divisors (see below), whose sum is σ = 122494848. Its totient is φ = 65620800.

The previous prime is 91232137. The next prime is 91232143. The reversal of 91232141 is 14123219.

It is not a de Polignac number, because 91232141 - 2² = 91232137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91232143) 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 in 15 ways as a sum of consecutive naturals, for example, 44570 + ... + 46571.

It is an arithmetic number, because the mean of its divisors is an integer number (7655928).

Almost surely, 2^91232141 is an apocalyptic number.

91232141 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

91232141 is a deficient number, since it is larger than the sum of its proper divisors (31262707).

91232141 is a wasteful number, since it uses less digits than its factorization.

91232141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91172.

The product of its digits is 432, while the sum is 23.

The square root of 91232141 is about 9551.5517587458. The cubic root of 91232141 is about 450.1762947107.

It can be divided in two parts, 91 and 232141, that added together give a palindrome (232232).

The spelling of 91232141 in words is "ninety-one million, two hundred thirty-two thousand, one hundred forty-one".