31484645 has 8 divisors (see below), whose sum is σ = 37917720. Its totient is φ = 25096960.

The previous prime is 31484627. The next prime is 31484647. The reversal of 31484645 is 54648413.

It can be written as a sum of positive squares in 4 ways, for example, as 5769604 + 25715041 = 2402^2 + 5071^2 .

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

It is not a de Polignac number, because 31484645 - 2¹⁶ = 31419109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31484647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9800 + ... + 12609.

It is an arithmetic number, because the mean of its divisors is an integer number (4739715).

Almost surely, 2^31484645 is an apocalyptic number.

It is an amenable number.

31484645 is a deficient number, since it is larger than the sum of its proper divisors (6433075).

31484645 is a wasteful number, since it uses less digits than its factorization.

31484645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22695.

The product of its digits is 46080, while the sum is 35.

The square root of 31484645 is about 5611.1179812939. The cubic root of 31484645 is about 315.7666552981.

The spelling of 31484645 in words is "thirty-one million, four hundred eighty-four thousand, six hundred forty-five".