31109483 has 2 divisors, whose sum is σ = 31109484. Its totient is φ = 31109482.

The previous prime is 31109467. The next prime is 31109509. The reversal of 31109483 is 38490113.

It is a weak prime.

It is an emirp because it is prime and its reverse (38490113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31109483 - 2⁴ = 31109467 is a prime.

It is a Sophie Germain prime.

It is equal to p_1922249 and since 31109483 and 1922249 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (31109443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15554741 + 15554742.

It is an arithmetic number, because the mean of its divisors is an integer number (15554742).

Almost surely, 2^31109483 is an apocalyptic number.

31109483 is a deficient number, since it is larger than the sum of its proper divisors (1).

31109483 is an equidigital number, since it uses as much as digits as its factorization.

31109483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 31109483 is about 5577.5875609442. The cubic root of 31109483 is about 314.5074455468.

Adding to 31109483 its reverse (38490113), we get a palindrome (69599596).

The spelling of 31109483 in words is "thirty-one million, one hundred nine thousand, four hundred eighty-three".