31343230253 has 2 divisors, whose sum is σ = 31343230254. Its totient is φ = 31343230252.

The previous prime is 31343230241. The next prime is 31343230279. The reversal of 31343230253 is 35203234313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16590212809 + 14753017444 = 128803^2 + 121462^2 .

It is a cyclic number.

It is not a de Polignac number, because 31343230253 - 2¹⁶ = 31343164717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31343230223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15671615126 + 15671615127.

It is an arithmetic number, because the mean of its divisors is an integer number (15671615127).

Almost surely, 2^31343230253 is an apocalyptic number.

It is an amenable number.

31343230253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31343230253 is an equidigital number, since it uses as much as digits as its factorization.

31343230253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 29.

Adding to 31343230253 its reverse (35203234313), we get a palindrome (66546464566).

The spelling of 31343230253 in words is "thirty-one billion, three hundred forty-three million, two hundred thirty thousand, two hundred fifty-three".