31748965 has 8 divisors (see below), whose sum is σ = 39028248. Its totient is φ = 24779520.

The previous prime is 31748957. The next prime is 31748971. The reversal of 31748965 is 56984713.

It can be written as a sum of positive squares in 4 ways, for example, as 40804 + 31708161 = 202^2 + 5631^2 .

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

It is not a de Polignac number, because 31748965 - 2³ = 31748957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77232 + ... + 77641.

It is an arithmetic number, because the mean of its divisors is an integer number (4878531).

Almost surely, 2^31748965 is an apocalyptic number.

It is an amenable number.

31748965 is a deficient number, since it is larger than the sum of its proper divisors (7279283).

31748965 is a wasteful number, since it uses less digits than its factorization.

31748965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154919.

The product of its digits is 181440, while the sum is 43.

The square root of 31748965 is about 5634.6219926451. The cubic root of 31748965 is about 316.6478357531.

The spelling of 31748965 in words is "thirty-one million, seven hundred forty-eight thousand, nine hundred sixty-five".