31334021 has 8 divisors (see below), whose sum is σ = 33237600. Its totient is φ = 29455920.

The previous prime is 31334011. The next prime is 31334041. The reversal of 31334021 is 12043313.

It is a happy number.

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 31334021 - 2¹⁰ = 31332997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31334011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806 + ... + 8783.

It is an arithmetic number, because the mean of its divisors is an integer number (4154700).

Almost surely, 2^31334021 is an apocalyptic number.

It is an amenable number.

31334021 is a deficient number, since it is larger than the sum of its proper divisors (1903579).

31334021 is a wasteful number, since it uses less digits than its factorization.

31334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12739.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 31334021 is about 5597.6799658430. The cubic root of 31334021 is about 315.2623027241.

Adding to 31334021 its reverse (12043313), we get a palindrome (43377334).

The spelling of 31334021 in words is "thirty-one million, three hundred thirty-four thousand, twenty-one".