31366061 has 4 divisors (see below), whose sum is σ = 32033472. Its totient is φ = 30698652.

The previous prime is 31366057. The next prime is 31366073. The reversal of 31366061 is 16066313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31366061 - 2² = 31366057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31366061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31366001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333635 + ... + 333728.

It is an arithmetic number, because the mean of its divisors is an integer number (8008368).

Almost surely, 2^31366061 is an apocalyptic number.

It is an amenable number.

31366061 is a deficient number, since it is larger than the sum of its proper divisors (667411).

31366061 is an equidigital number, since it uses as much as digits as its factorization.

31366061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667410.

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

The square root of 31366061 is about 5600.5411345691. The cubic root of 31366061 is about 315.3697212524.

The spelling of 31366061 in words is "thirty-one million, three hundred sixty-six thousand, sixty-one".