913081 has 4 divisors (see below), whose sum is σ = 983332. Its totient is φ = 842832.

The previous prime is 913067. The next prime is 913103. The reversal of 913081 is 180319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180319 = 17 ⋅10607.

It can be written as a sum of positive squares in 2 ways, for example, as 477481 + 435600 = 691^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 913081 - 2⁷ = 912953 is a prime.

It is a super-2 number, since 2×913081² = 1667433825122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913981) 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, 35106 + ... + 35131.

It is an arithmetic number, because the mean of its divisors is an integer number (245833).

2⁹¹³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

913081 is a deficient number, since it is larger than the sum of its proper divisors (70251).

913081 is a wasteful number, since it uses less digits than its factorization.

913081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70250.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 913081 is about 955.5527196340. The cubic root of 913081 is about 97.0144520926.

The spelling of 913081 in words is "nine hundred thirteen thousand, eighty-one".