331483813 has 2 divisors, whose sum is σ = 331483814. Its totient is φ = 331483812.

The previous prime is 331483739. The next prime is 331483847. The reversal of 331483813 is 318384133.

It is an a-pointer prime, because the next prime (331483847) can be obtained adding 331483813 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310534884 + 20948929 = 17622^2 + 4577^2 .

It is an emirp because it is prime and its reverse (318384133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331483813 - 2⁹ = 331483301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331483853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165741906 + 165741907.

It is an arithmetic number, because the mean of its divisors is an integer number (165741907).

Almost surely, 2^331483813 is an apocalyptic number.

It is an amenable number.

331483813 is a deficient number, since it is larger than the sum of its proper divisors (1).

331483813 is an equidigital number, since it uses as much as digits as its factorization.

331483813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 331483813 is about 18206.6969272298. The cubic root of 331483813 is about 692.0765094385.

The spelling of 331483813 in words is "three hundred thirty-one million, four hundred eighty-three thousand, eight hundred thirteen".