31628049 has 8 divisors (see below), whose sum is σ = 42588672. Its totient is φ = 20876400.

The previous prime is 31628021. The next prime is 31628089. The reversal of 31628049 is 94082613.

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

It is not a de Polignac number, because 31628049 - 2⁵ = 31628017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31628089) 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, 51889 + ... + 52494.

It is an arithmetic number, because the mean of its divisors is an integer number (5323584).

Almost surely, 2^31628049 is an apocalyptic number.

It is an amenable number.

31628049 is a deficient number, since it is larger than the sum of its proper divisors (10960623).

31628049 is a wasteful number, since it uses less digits than its factorization.

31628049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104487.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 31628049 is about 5623.8820222334. The cubic root of 31628049 is about 316.2453397013.

It can be divided in two parts, 3162 and 8049, that added together give a palindrome (11211).

The spelling of 31628049 in words is "thirty-one million, six hundred twenty-eight thousand, forty-nine".