31434253 has 2 divisors, whose sum is σ = 31434254. Its totient is φ = 31434252.

The previous prime is 31434251. The next prime is 31434257. The reversal of 31434253 is 35243413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18774889 + 12659364 = 4333^2 + 3558^2 .

It is an emirp because it is prime and its reverse (35243413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31434253 - 2¹ = 31434251 is a prime.

It is a super-2 number, since 2×31434253² = 1976224523336018, which contains 22 as substring.

Together with 31434251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31434251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717126 + 15717127.

It is an arithmetic number, because the mean of its divisors is an integer number (15717127).

Almost surely, 2^31434253 is an apocalyptic number.

It is an amenable number.

31434253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434253 is an equidigital number, since it uses as much as digits as its factorization.

31434253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 31434253 is about 5606.6258123759. The cubic root of 31434253 is about 315.5981010700.

Adding to 31434253 its reverse (35243413), we get a palindrome (66677666).

It can be divided in two parts, 3143 and 4253, that added together give a square (7396 = 86²).

The spelling of 31434253 in words is "thirty-one million, four hundred thirty-four thousand, two hundred fifty-three".