31342081 has 8 divisors (see below), whose sum is σ = 32213664. Its totient is φ = 30475680.

The previous prime is 31342057. The next prime is 31342093. The reversal of 31342081 is 18024313.

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 31342081 - 2⁵ = 31342049 is a prime.

It is a super-2 number, since 2×31342081² = 1964652082821122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31342021) 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, 13126 + ... + 15328.

It is an arithmetic number, because the mean of its divisors is an integer number (4026708).

Almost surely, 2^31342081 is an apocalyptic number.

It is an amenable number.

31342081 is a deficient number, since it is larger than the sum of its proper divisors (871583).

31342081 is a wasteful number, since it uses less digits than its factorization.

31342081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 31342081 is about 5598.3998606745. The cubic root of 31342081 is about 315.2893318789.

Adding to 31342081 its reverse (18024313), we get a palindrome (49366394).

The spelling of 31342081 in words is "thirty-one million, three hundred forty-two thousand, eighty-one".