1304735231 has 2 divisors, whose sum is σ = 1304735232. Its totient is φ = 1304735230.

The previous prime is 1304735207. The next prime is 1304735233. The reversal of 1304735231 is 1325374031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304735231 is a prime.

It is a super-2 number, since 2×1304735231² = 3404668046025246722, which contains 22 as substring.

Together with 1304735233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1304735194 and 1304735203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1304735233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652367615 + 652367616.

It is an arithmetic number, because the mean of its divisors is an integer number (652367616).

Almost surely, 2^1304735231 is an apocalyptic number.

1304735231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304735231 is an equidigital number, since it uses as much as digits as its factorization.

1304735231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 1304735231 is about 36121.1189057039. The cubic root of 1304735231 is about 1092.7164049316.

The spelling of 1304735231 in words is "one billion, three hundred four million, seven hundred thirty-five thousand, two hundred thirty-one".