343631400253 has 2 divisors, whose sum is σ = 343631400254. Its totient is φ = 343631400252.

The previous prime is 343631400199. The next prime is 343631400269. The reversal of 343631400253 is 352004136343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334867070329 + 8764329924 = 578677^2 + 93618^2 .

It is a cyclic number.

It is not a de Polignac number, because 343631400253 - 2²⁵ = 343597845821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343631400293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171815700126 + 171815700127.

It is an arithmetic number, because the mean of its divisors is an integer number (171815700127).

Almost surely, 2^343631400253 is an apocalyptic number.

It is an amenable number.

343631400253 is a deficient number, since it is larger than the sum of its proper divisors (1).

343631400253 is an equidigital number, since it uses as much as digits as its factorization.

343631400253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 343631400253 its reverse (352004136343), we get a palindrome (695635536596).

The spelling of 343631400253 in words is "three hundred forty-three billion, six hundred thirty-one million, four hundred thousand, two hundred fifty-three".