31363361 has 2 divisors, whose sum is σ = 31363362. Its totient is φ = 31363360.

The previous prime is 31363349. The next prime is 31363363. The reversal of 31363361 is 16336313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27363361 + 4000000 = 5231^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 31363361 - 2¹⁰ = 31362337 is a prime.

It is a super-3 number, since 3×31363361³ (a number of 23 digits) contains 333 as substring.

Together with 31363363, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31363361.

It is not a weakly prime, because it can be changed into another prime (31363363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15681680 + 15681681.

It is an arithmetic number, because the mean of its divisors is an integer number (15681681).

Almost surely, 2^31363361 is an apocalyptic number.

It is an amenable number.

31363361 is a deficient number, since it is larger than the sum of its proper divisors (1).

31363361 is an equidigital number, since it uses as much as digits as its factorization.

31363361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 26.

The square root of 31363361 is about 5600.3000812456. The cubic root of 31363361 is about 315.3606719525.

Adding to 31363361 its reverse (16336313), we get a palindrome (47699674).

The spelling of 31363361 in words is "thirty-one million, three hundred sixty-three thousand, three hundred sixty-one".