31449163 has 2 divisors, whose sum is σ = 31449164. Its totient is φ = 31449162.

The previous prime is 31449127. The next prime is 31449179. The reversal of 31449163 is 36194413.

It is a strong prime.

It is an emirp because it is prime and its reverse (36194413) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31449163 is a prime.

It is not a weakly prime, because it can be changed into another prime (31449263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15724581 + 15724582.

It is an arithmetic number, because the mean of its divisors is an integer number (15724582).

Almost surely, 2^31449163 is an apocalyptic number.

31449163 is a deficient number, since it is larger than the sum of its proper divisors (1).

31449163 is an equidigital number, since it uses as much as digits as its factorization.

31449163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 31449163 is about 5607.9553314911. The cubic root of 31449163 is about 315.6479916983.

The spelling of 31449163 in words is "thirty-one million, four hundred forty-nine thousand, one hundred sixty-three".