31228485 has 16 divisors (see below), whose sum is σ = 50435136. Its totient is φ = 16498688.

The previous prime is 31228469. The next prime is 31228537. The reversal of 31228485 is 58482213.

It is a cyclic number.

It is not a de Polignac number, because 31228485 - 2⁴ = 31228469 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8124 + ... + 11333.

It is an arithmetic number, because the mean of its divisors is an integer number (3152196).

Almost surely, 2^31228485 is an apocalyptic number.

It is an amenable number.

31228485 is a deficient number, since it is larger than the sum of its proper divisors (19206651).

31228485 is a wasteful number, since it uses less digits than its factorization.

31228485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19572.

The product of its digits is 15360, while the sum is 33.

The square root of 31228485 is about 5588.2452523131. The cubic root of 31228485 is about 314.9079600079.

It can be divided in two parts, 31228 and 485, that added together give a palindrome (31713).

The spelling of 31228485 in words is "thirty-one million, two hundred twenty-eight thousand, four hundred eighty-five".