31349363 has 2 divisors, whose sum is σ = 31349364. Its totient is φ = 31349362.

The previous prime is 31349359. The next prime is 31349369. The reversal of 31349363 is 36394313.

It is a weak prime.

It is an emirp because it is prime and its reverse (36394313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31349363 - 2² = 31349359 is a prime.

It is not a weakly prime, because it can be changed into another prime (31349369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15674681 + 15674682.

It is an arithmetic number, because the mean of its divisors is an integer number (15674682).

Almost surely, 2^31349363 is an apocalyptic number.

31349363 is a deficient number, since it is larger than the sum of its proper divisors (1).

31349363 is an equidigital number, since it uses as much as digits as its factorization.

31349363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 32.

The square root of 31349363 is about 5599.0501873086. The cubic root of 31349363 is about 315.3137480318.

The spelling of 31349363 in words is "thirty-one million, three hundred forty-nine thousand, three hundred sixty-three".