31228673 has 8 divisors (see below), whose sum is σ = 36037248. Its totient is φ = 26506944.

The previous prime is 31228669. The next prime is 31228693. The reversal of 31228673 is 37682213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31228673 - 2² = 31228669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31228663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20936 + ... + 22377.

It is an arithmetic number, because the mean of its divisors is an integer number (4504656).

Almost surely, 2^31228673 is an apocalyptic number.

It is an amenable number.

31228673 is a deficient number, since it is larger than the sum of its proper divisors (4808575).

31228673 is a wasteful number, since it uses less digits than its factorization.

31228673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43423.

The product of its digits is 12096, while the sum is 32.

The square root of 31228673 is about 5588.2620733104. The cubic root of 31228673 is about 314.9085919371.

The spelling of 31228673 in words is "thirty-one million, two hundred twenty-eight thousand, six hundred seventy-three".