333138261 has 8 divisors (see below), whose sum is σ = 445755040. Its totient is φ = 221306832.

The previous prime is 333138251. The next prime is 333138277. The reversal of 333138261 is 162831333.

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

It is not a de Polignac number, because 333138261 - 2¹⁷ = 333007189 is a prime.

It is a super-2 number, since 2×333138261² = 221962201884208242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333138241) 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, 195346 + ... + 197043.

It is an arithmetic number, because the mean of its divisors is an integer number (55719380).

Almost surely, 2^333138261 is an apocalyptic number.

It is an amenable number.

333138261 is a deficient number, since it is larger than the sum of its proper divisors (112616779).

333138261 is a wasteful number, since it uses less digits than its factorization.

333138261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392675.

The product of its digits is 7776, while the sum is 30.

The square root of 333138261 is about 18252.0755258135. The cubic root of 333138261 is about 693.2259923558.

Adding to 333138261 its reverse (162831333), we get a palindrome (495969594).

The spelling of 333138261 in words is "three hundred thirty-three million, one hundred thirty-eight thousand, two hundred sixty-one".