830931 has 4 divisors (see below), whose sum is σ = 1107912. Its totient is φ = 553952.

The previous prime is 830923. The next prime is 830939. The reversal of 830931 is 139038.

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

It is an interprime number because it is at equal distance from previous prime (830923) and next prime (830939).

It is a cyclic number.

It is not a de Polignac number, because 830931 - 2³ = 830923 is a prime.

It is a super-2 number, since 2×830931² = 1380892653522, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (830939) 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, 138486 + ... + 138491.

It is an arithmetic number, because the mean of its divisors is an integer number (276978).

2⁸³⁰⁹³¹ is an apocalyptic number.

830931 is a deficient number, since it is larger than the sum of its proper divisors (276981).

830931 is a wasteful number, since it uses less digits than its factorization.

830931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276980.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 830931 is about 911.5541673428. The cubic root of 830931 is about 94.0130885653.

Adding to 830931 its reverse (139038), we get a palindrome (969969).

The spelling of 830931 in words is "eight hundred thirty thousand, nine hundred thirty-one".