31042706 has 8 divisors (see below), whose sum is σ = 46597680. Its totient is φ = 15510148.

The previous prime is 31042681. The next prime is 31042721. The reversal of 31042706 is 60724013.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556 + ... + 8031.

It is an arithmetic number, because the mean of its divisors is an integer number (5824710).

Almost surely, 2^31042706 is an apocalyptic number.

31042706 is a deficient number, since it is larger than the sum of its proper divisors (15554974).

31042706 is a wasteful number, since it uses less digits than its factorization.

31042706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11208.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 31042706 is about 5571.5981549283. The cubic root of 31042706 is about 314.2822525986.

Adding to 31042706 its reverse (60724013), we get a palindrome (91766719).

The spelling of 31042706 in words is "thirty-one million, forty-two thousand, seven hundred six".