806245331 has 4 divisors (see below), whose sum is σ = 806645112. Its totient is φ = 805845552.

The previous prime is 806245291. The next prime is 806245333. The reversal of 806245331 is 133542608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806245331 is a prime.

It is a super-2 number, since 2×806245331² = 1300063067518599122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806245333) 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, 196850 + ... + 200903.

It is an arithmetic number, because the mean of its divisors is an integer number (201661278).

Almost surely, 2^806245331 is an apocalyptic number.

806245331 is a deficient number, since it is larger than the sum of its proper divisors (399781).

806245331 is a wasteful number, since it uses less digits than its factorization.

806245331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399780.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 806245331 is about 28394.4595123767. The cubic root of 806245331 is about 930.7271959089.

Adding to 806245331 its reverse (133542608), we get a palindrome (939787939).

The spelling of 806245331 in words is "eight hundred six million, two hundred forty-five thousand, three hundred thirty-one".