1304245531 has 2 divisors, whose sum is σ = 1304245532. Its totient is φ = 1304245530.

The previous prime is 1304245529. The next prime is 1304245541. The reversal of 1304245531 is 1355424031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1304245531 - 2¹ = 1304245529 is a prime.

It is a super-2 number, since 2×1304245531² = 3402112810266943922, which contains 22 as substring.

Together with 1304245529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1304245531.

It is not a weakly prime, because it can be changed into another prime (1304245541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652122765 + 652122766.

It is an arithmetic number, because the mean of its divisors is an integer number (652122766).

Almost surely, 2^1304245531 is an apocalyptic number.

1304245531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304245531 is an equidigital number, since it uses as much as digits as its factorization.

1304245531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1304245531 is about 36114.3396866120. The cubic root of 1304245531 is about 1092.5796798269.

Adding to 1304245531 its reverse (1355424031), we get a palindrome (2659669562).

The spelling of 1304245531 in words is "one billion, three hundred four million, two hundred forty-five thousand, five hundred thirty-one".