31166742 has 8 divisors (see below), whose sum is σ = 62333496. Its totient is φ = 10388912.

The previous prime is 31166711. The next prime is 31166767. The reversal of 31166742 is 24766113.

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

31166742 is an admirable number.

It is a congruent number.

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, 2597223 + ... + 2597234.

It is an arithmetic number, because the mean of its divisors is an integer number (7791687).

Almost surely, 2^31166742 is an apocalyptic number.

31166742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31166742 is a wasteful number, since it uses less digits than its factorization.

31166742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194462.

The product of its digits is 6048, while the sum is 30.

The square root of 31166742 is about 5582.7181551642. The cubic root of 31166742 is about 314.7002843304.

The spelling of 31166742 in words is "thirty-one million, one hundred sixty-six thousand, seven hundred forty-two".