31480173 has 12 divisors (see below), whose sum is σ = 45642688. Its totient is φ = 20907720.

The previous prime is 31480129. The next prime is 31480201. The reversal of 31480173 is 37108413.

It is a de Polignac number, because none of the positive numbers 2^k-31480173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31480103) 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 in 11 ways as a sum of consecutive naturals, for example, 4015 + ... + 8892.

Almost surely, 2^31480173 is an apocalyptic number.

It is an amenable number.

31480173 is a deficient number, since it is larger than the sum of its proper divisors (14162515).

31480173 is a wasteful number, since it uses less digits than its factorization.

31480173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13184 (or 13181 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 31480173 is about 5610.7194725810. The cubic root of 31480173 is about 315.7517043557.

Adding to 31480173 its reverse (37108413), we get a palindrome (68588586).

The spelling of 31480173 in words is "thirty-one million, four hundred eighty thousand, one hundred seventy-three".