91414231 has 4 divisors (see below), whose sum is σ = 91919464. Its totient is φ = 90909000.

The previous prime is 91414229. The next prime is 91414247. The reversal of 91414231 is 13241419.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13241419 = 17 ⋅778907.

It is a cyclic number.

It is not a de Polignac number, because 91414231 - 2¹ = 91414229 is a prime.

It is a super-2 number, since 2×91414231² = 16713123258642722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91414196 and 91414205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91414261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252345 + ... + 252706.

It is an arithmetic number, because the mean of its divisors is an integer number (22979866).

Almost surely, 2^91414231 is an apocalyptic number.

91414231 is a deficient number, since it is larger than the sum of its proper divisors (505233).

91414231 is a wasteful number, since it uses less digits than its factorization.

91414231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505232.

The product of its digits is 864, while the sum is 25.

The square root of 91414231 is about 9561.0789663092. The cubic root of 91414231 is about 450.4755975832.

The spelling of 91414231 in words is "ninety-one million, four hundred fourteen thousand, two hundred thirty-one".