304312111253 has 2 divisors, whose sum is σ = 304312111254. Its totient is φ = 304312111252.

The previous prime is 304312111231. The next prime is 304312111267. The reversal of 304312111253 is 352111213403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303224232964 + 1087878289 = 550658^2 + 32983^2 .

It is a cyclic number.

It is not a de Polignac number, because 304312111253 - 2⁸ = 304312110997 is a prime.

It is a super-2 number, since 2×304312111253² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304312111553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152156055626 + 152156055627.

It is an arithmetic number, because the mean of its divisors is an integer number (152156055627).

Almost surely, 2^304312111253 is an apocalyptic number.

It is an amenable number.

304312111253 is a deficient number, since it is larger than the sum of its proper divisors (1).

304312111253 is an equidigital number, since it uses as much as digits as its factorization.

304312111253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 304312111253 its reverse (352111213403), we get a palindrome (656423324656).

The spelling of 304312111253 in words is "three hundred four billion, three hundred twelve million, one hundred eleven thousand, two hundred fifty-three".