332781313 has 2 divisors, whose sum is σ = 332781314. Its totient is φ = 332781312.

The previous prime is 332781277. The next prime is 332781347. The reversal of 332781313 is 313187233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252714609 + 80066704 = 15897^2 + 8948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-332781313 is a prime.

It is a super-2 number, since 2×332781313² = 221486804564007938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (332781353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166390656 + 166390657.

It is an arithmetic number, because the mean of its divisors is an integer number (166390657).

Almost surely, 2^332781313 is an apocalyptic number.

It is an amenable number.

332781313 is a deficient number, since it is larger than the sum of its proper divisors (1).

332781313 is an equidigital number, since it uses as much as digits as its factorization.

332781313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 332781313 is about 18242.2946199210. The cubic root of 332781313 is about 692.9783133487.

The spelling of 332781313 in words is "three hundred thirty-two million, seven hundred eighty-one thousand, three hundred thirteen".