31696453 has 2 divisors, whose sum is σ = 31696454. Its totient is φ = 31696452.

The previous prime is 31696451. The next prime is 31696487. The reversal of 31696453 is 35469613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26234884 + 5461569 = 5122^2 + 2337^2 .

It is an emirp because it is prime and its reverse (35469613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31696453 - 2¹ = 31696451 is a prime.

Together with 31696451, 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 (31696451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15848226 + 15848227.

It is an arithmetic number, because the mean of its divisors is an integer number (15848227).

Almost surely, 2^31696453 is an apocalyptic number.

It is an amenable number.

31696453 is a deficient number, since it is larger than the sum of its proper divisors (1).

31696453 is an equidigital number, since it uses as much as digits as its factorization.

31696453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 37.

The square root of 31696453 is about 5629.9603018139. The cubic root of 31696453 is about 316.4731635298.

It can be divided in two parts, 316 and 96453, that added together give a palindrome (96769).

The spelling of 31696453 in words is "thirty-one million, six hundred ninety-six thousand, four hundred fifty-three".