31430133253 has 2 divisors, whose sum is σ = 31430133254. Its totient is φ = 31430133252.

The previous prime is 31430133227. The next prime is 31430133281. The reversal of 31430133253 is 35233103413.

It is an a-pointer prime, because the next prime (31430133281) can be obtained adding 31430133253 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16236366084 + 15193767169 = 127422^2 + 123263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31430133253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31430133853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715066626 + 15715066627.

It is an arithmetic number, because the mean of its divisors is an integer number (15715066627).

Almost surely, 2^31430133253 is an apocalyptic number.

It is an amenable number.

31430133253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31430133253 is an equidigital number, since it uses as much as digits as its factorization.

31430133253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 28.

Adding to 31430133253 its reverse (35233103413), we get a palindrome (66663236666).

The spelling of 31430133253 in words is "thirty-one billion, four hundred thirty million, one hundred thirty-three thousand, two hundred fifty-three".