653437231 has 2 divisors, whose sum is σ = 653437232. Its totient is φ = 653437230.

The previous prime is 653437229. The next prime is 653437259. The reversal of 653437231 is 132734356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653437231 - 2¹ = 653437229 is a prime.

It is a super-2 number, since 2×653437231² = 853960429713894722, which contains 22 as substring.

Together with 653437229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653431231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326718615 + 326718616.

It is an arithmetic number, because the mean of its divisors is an integer number (326718616).

Almost surely, 2^653437231 is an apocalyptic number.

653437231 is a deficient number, since it is larger than the sum of its proper divisors (1).

653437231 is an equidigital number, since it uses as much as digits as its factorization.

653437231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 34.

The square root of 653437231 is about 25562.4183323879. The cubic root of 653437231 is about 867.7633263394.

The spelling of 653437231 in words is "six hundred fifty-three million, four hundred thirty-seven thousand, two hundred thirty-one".