31480899 has 4 divisors (see below), whose sum is σ = 41974536. Its totient is φ = 20987264.

The previous prime is 31480879. The next prime is 31480901. The reversal of 31480899 is 99808413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31480899 - 2¹¹ = 31478851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31480899.

It is not an unprimeable number, because it can be changed into a prime (31480829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5246814 + ... + 5246819.

It is an arithmetic number, because the mean of its divisors is an integer number (10493634).

Almost surely, 2^31480899 is an apocalyptic number.

31480899 is a deficient number, since it is larger than the sum of its proper divisors (10493637).

31480899 is a wasteful number, since it uses less digits than its factorization.

31480899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10493636.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 31480899 is about 5610.7841697930. The cubic root of 31480899 is about 315.7541316398.

The spelling of 31480899 in words is "thirty-one million, four hundred eighty thousand, eight hundred ninety-nine".