91842331 has 16 divisors (see below), whose sum is σ = 106423744. Its totient is φ = 77635584.

The previous prime is 91842329. The next prime is 91842341. The reversal of 91842331 is 13324819.

It is a cyclic number.

It is not a de Polignac number, because 91842331 - 2¹ = 91842329 is a prime.

It is a super-2 number, since 2×91842331² = 16870027527027122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91842293 and 91842302.

It is not an unprimeable number, because it can be changed into a prime (91842341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211891 + ... + 212323.

It is an arithmetic number, because the mean of its divisors is an integer number (6651484).

Almost surely, 2^91842331 is an apocalyptic number.

91842331 is a deficient number, since it is larger than the sum of its proper divisors (14581413).

91842331 is a wasteful number, since it uses less digits than its factorization.

91842331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its digits is 5184, while the sum is 31.

The square root of 91842331 is about 9583.4404573723. The cubic root of 91842331 is about 451.1777068730.

The spelling of 91842331 in words is "ninety-one million, eight hundred forty-two thousand, three hundred thirty-one".