31348947 has 8 divisors (see below), whose sum is σ = 47769856. Its totient is φ = 17913672.

The previous prime is 31348939. The next prime is 31348951. The reversal of 31348947 is 74984313.

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

It is not a de Polignac number, because 31348947 - 2³ = 31348939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31348907) 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, 746383 + ... + 746424.

It is an arithmetic number, because the mean of its divisors is an integer number (5971232).

Almost surely, 2^31348947 is an apocalyptic number.

31348947 is a deficient number, since it is larger than the sum of its proper divisors (16420909).

31348947 is a wasteful number, since it uses less digits than its factorization.

31348947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492817.

The product of its digits is 72576, while the sum is 39.

The square root of 31348947 is about 5599.0130380273. The cubic root of 31348947 is about 315.3123533081.

The spelling of 31348947 in words is "thirty-one million, three hundred forty-eight thousand, nine hundred forty-seven".