31968193 has 8 divisors (see below), whose sum is σ = 32543840. Its totient is φ = 31397760.

The previous prime is 31968187. The next prime is 31968199. The reversal of 31968193 is 39186913.

It is an interprime number because it is at equal distance from previous prime (31968187) and next prime (31968199).

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

It is a cyclic number.

It is not a de Polignac number, because 31968193 - 2⁹ = 31967681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31968199) 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, 12298 + ... + 14668.

It is an arithmetic number, because the mean of its divisors is an integer number (4067980).

Almost surely, 2^31968193 is an apocalyptic number.

It is an amenable number.

31968193 is a deficient number, since it is larger than the sum of its proper divisors (575647).

31968193 is a wasteful number, since it uses less digits than its factorization.

31968193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607.

The product of its digits is 34992, while the sum is 40.

The square root of 31968193 is about 5654.0421823683. The cubic root of 31968193 is about 317.3749870537.

The spelling of 31968193 in words is "thirty-one million, nine hundred sixty-eight thousand, one hundred ninety-three".