604402531 has 2 divisors, whose sum is σ = 604402532. Its totient is φ = 604402530.

The previous prime is 604402529. The next prime is 604402541. The reversal of 604402531 is 135204406.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 604402531 - 2¹ = 604402529 is a prime.

It is a super-2 number, since 2×604402531² = 730604838958411922, which contains 22 as substring.

Together with 604402529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 604402496 and 604402505.

It is not a weakly prime, because it can be changed into another prime (604402541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302201265 + 302201266.

It is an arithmetic number, because the mean of its divisors is an integer number (302201266).

Almost surely, 2^604402531 is an apocalyptic number.

604402531 is a deficient number, since it is larger than the sum of its proper divisors (1).

604402531 is an equidigital number, since it uses as much as digits as its factorization.

604402531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 604402531 is about 24584.5994679596. The cubic root of 604402531 is about 845.4905504523.

Adding to 604402531 its reverse (135204406), we get a palindrome (739606937).

The spelling of 604402531 in words is "six hundred four million, four hundred two thousand, five hundred thirty-one".