31948345 has 16 divisors (see below), whose sum is σ = 45041472. Its totient is φ = 21447360.

The previous prime is 31948339. The next prime is 31948351. The reversal of 31948345 is 54384913.

It is an interprime number because it is at equal distance from previous prime (31948339) and next prime (31948351).

It is not a de Polignac number, because 31948345 - 2⁹ = 31947833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21627 + ... + 23056.

It is an arithmetic number, because the mean of its divisors is an integer number (2815092).

Almost surely, 2^31948345 is an apocalyptic number.

It is an amenable number.

31948345 is a deficient number, since it is larger than the sum of its proper divisors (13093127).

31948345 is a wasteful number, since it uses less digits than its factorization.

31948345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44712.

The product of its digits is 51840, while the sum is 37.

The square root of 31948345 is about 5652.2867053963. The cubic root of 31948345 is about 317.3092908907.

The spelling of 31948345 in words is "thirty-one million, nine hundred forty-eight thousand, three hundred forty-five".