31996147 has 8 divisors (see below), whose sum is σ = 32622912. Its totient is φ = 31372800.

The previous prime is 31996127. The next prime is 31996163. The reversal of 31996147 is 74169913.

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 31996147 - 2¹¹ = 31994099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31996127) 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, 25683 + ... + 26899.

It is an arithmetic number, because the mean of its divisors is an integer number (4077864).

Almost surely, 2^31996147 is an apocalyptic number.

31996147 is a deficient number, since it is larger than the sum of its proper divisors (626765).

31996147 is a wasteful number, since it uses less digits than its factorization.

31996147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709.

The product of its digits is 40824, while the sum is 40.

The square root of 31996147 is about 5656.5136789369. The cubic root of 31996147 is about 317.4674676817.

The spelling of 31996147 in words is "thirty-one million, nine hundred ninety-six thousand, one hundred forty-seven".