653831 has 2 divisors, whose sum is σ = 653832. Its totient is φ = 653830.

The previous prime is 653819. The next prime is 653879. The reversal of 653831 is 138356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653831 - 2¹⁴ = 637447 is a prime.

It is a super-2 number, since 2×653831² = 854989953122, 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 653831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326915 + 326916.

It is an arithmetic number, because the mean of its divisors is an integer number (326916).

2⁶⁵³⁸³¹ is an apocalyptic number.

653831 is a deficient number, since it is larger than the sum of its proper divisors (1).

653831 is an equidigital number, since it uses as much as digits as its factorization.

653831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 653831 is about 808.5981696739. The cubic root of 653831 is about 86.7937599484.

The spelling of 653831 in words is "six hundred fifty-three thousand, eight hundred thirty-one".