828431 has 2 divisors, whose sum is σ = 828432. Its totient is φ = 828430.

The previous prime is 828409. The next prime is 828449. The reversal of 828431 is 134828.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 828431 - 2¹⁴ = 812047 is a prime.

It is a super-2 number, since 2×828431² = 1372595843522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 828431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414215 + 414216.

It is an arithmetic number, because the mean of its divisors is an integer number (414216).

2⁸²⁸⁴³¹ is an apocalyptic number.

828431 is a deficient number, since it is larger than the sum of its proper divisors (1).

828431 is an equidigital number, since it uses as much as digits as its factorization.

828431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 26.

The square root of 828431 is about 910.1818499619. The cubic root of 828431 is about 93.9187089564.

The spelling of 828431 in words is "eight hundred twenty-eight thousand, four hundred thirty-one".