31628552133 has 8 divisors (see below), whose sum is σ = 42239533600. Its totient is φ = 21051636048.

The previous prime is 31628552117. The next prime is 31628552149. The reversal of 31628552133 is 33125582613.

It is an interprime number because it is at equal distance from previous prime (31628552117) and next prime (31628552149).

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

It is not a de Polignac number, because 31628552133 - 2⁴ = 31628552117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31628552091 and 31628552100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31628552113) 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, 8514178 + ... + 8517891.

It is an arithmetic number, because the mean of its divisors is an integer number (5279941700).

Almost surely, 2^31628552133 is an apocalyptic number.

It is an amenable number.

31628552133 is a deficient number, since it is larger than the sum of its proper divisors (10610981467).

31628552133 is a wasteful number, since it uses less digits than its factorization.

31628552133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17032691.

The product of its digits is 129600, while the sum is 39.

The spelling of 31628552133 in words is "thirty-one billion, six hundred twenty-eight million, five hundred fifty-two thousand, one hundred thirty-three".