1304251231 has 2 divisors, whose sum is σ = 1304251232. Its totient is φ = 1304251230.

The previous prime is 1304251229. The next prime is 1304251241. The reversal of 1304251231 is 1321524031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1304251231 - 2¹ = 1304251229 is a prime.

It is a super-2 number, since 2×1304251231² = 3402142547130030722, which contains 22 as substring.

Together with 1304251229, 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 (1304251241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652125615 + 652125616.

It is an arithmetic number, because the mean of its divisors is an integer number (652125616).

Almost surely, 2^1304251231 is an apocalyptic number.

1304251231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304251231 is an equidigital number, since it uses as much as digits as its factorization.

1304251231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1304251231 is about 36114.4186025471. The cubic root of 1304251231 is about 1092.5812714738.

Adding to 1304251231 its reverse (1321524031), we get a palindrome (2625775262).

The spelling of 1304251231 in words is "one billion, three hundred four million, two hundred fifty-one thousand, two hundred thirty-one".