31066361 has 8 divisors (see below), whose sum is σ = 33132960. Its totient is φ = 29026368.

The previous prime is 31066289. The next prime is 31066363. The reversal of 31066361 is 16366013.

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 31066361 - 2¹⁰ = 31065337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31066361.

It is not an unprimeable number, because it can be changed into a prime (31066363) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4211 + ... + 8936.

It is an arithmetic number, because the mean of its divisors is an integer number (4141620).

Almost surely, 2^31066361 is an apocalyptic number.

It is an amenable number.

31066361 is a deficient number, since it is larger than the sum of its proper divisors (2066599).

31066361 is a wasteful number, since it uses less digits than its factorization.

31066361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13303.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 31066361 is about 5573.7205706781. The cubic root of 31066361 is about 314.3620615681.

The spelling of 31066361 in words is "thirty-one million, sixty-six thousand, three hundred sixty-one".