336318921 has 9 divisors (see below), whose sum is σ = 485873479. Its totient is φ = 224175936.

The previous prime is 336318901. The next prime is 336318929. The reversal of 336318921 is 129813633.

The square root of 336318921 is 18339.

It is a perfect power (a square), and thus also a powerful number.

336318921 is a `hidden beast` number, since 336 + 318 + 9 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 185913225 + 150405696 = 13635^2 + 12264^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 336318921 - 2⁵ = 336318889 is a prime.

It is a super-2 number, since 2×336318921² = 226220833245208482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (336318929) 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 8 ways as a sum of consecutive naturals, for example, 51961 + ... + 58073.

Almost surely, 2^336318921 is an apocalyptic number.

336318921 is the 18339-th square number.

336318921 is the 9170-th centered octagonal number.

It is an amenable number.

336318921 is a deficient number, since it is larger than the sum of its proper divisors (149554558).

336318921 is an frugal number, since it uses more digits than its factorization.

336318921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12232 (or 6116 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The cubic root of 336318921 is about 695.4252153534.

Multiplying 336318921 by its sum of digits (36), we get a square (12107481156 = 110034²).

The spelling of 336318921 in words is "three hundred thirty-six million, three hundred eighteen thousand, nine hundred twenty-one".