831430 has 32 divisors (see below), whose sum is σ = 1607040. Its totient is φ = 309120.

The previous prime is 831409. The next prime is 831431. The reversal of 831430 is 34138.

It is a junction number, because it is equal to n+sod(n) for n = 831398 and 831407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831431) by changing a digit.

831430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13600 + ... + 13660.

It is an arithmetic number, because the mean of its divisors is an integer number (50220).

2⁸³¹⁴³⁰ is an apocalyptic number.

831430 is a deficient number, since it is larger than the sum of its proper divisors (775610).

831430 is a wasteful number, since it uses less digits than its factorization.

831430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 831430 is about 911.8278346267. The cubic root of 831430 is about 94.0319040640.

Adding to 831430 its reverse (34138), we get a palindrome (865568).

The spelling of 831430 in words is "eight hundred thirty-one thousand, four hundred thirty".