1304431240253 has 2 divisors, whose sum is σ = 1304431240254. Its totient is φ = 1304431240252.

The previous prime is 1304431240201. The next prime is 1304431240261. The reversal of 1304431240253 is 3520421344031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 832377048409 + 472054191844 = 912347^2 + 687062^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304431240253 - 2³⁴ = 1287251371069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1304431240153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652215620126 + 652215620127.

It is an arithmetic number, because the mean of its divisors is an integer number (652215620127).

Almost surely, 2^{1304431240253} is an apocalyptic number.

It is an amenable number.

1304431240253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304431240253 is an equidigital number, since it uses as much as digits as its factorization.

1304431240253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 1304431240253 its reverse (3520421344031), we get a palindrome (4824852584284).

The spelling of 1304431240253 in words is "one trillion, three hundred four billion, four hundred thirty-one million, two hundred forty thousand, two hundred fifty-three".