331413389 has 2 divisors, whose sum is σ = 331413390. Its totient is φ = 331413388.

The previous prime is 331413377. The next prime is 331413431. The reversal of 331413389 is 983314133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 330876100 + 537289 = 18190^2 + 733^2 .

It is an emirp because it is prime and its reverse (983314133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331413389 - 2¹² = 331409293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331413349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165706694 + 165706695.

It is an arithmetic number, because the mean of its divisors is an integer number (165706695).

Almost surely, 2^331413389 is an apocalyptic number.

It is an amenable number.

331413389 is a deficient number, since it is larger than the sum of its proper divisors (1).

331413389 is an equidigital number, since it uses as much as digits as its factorization.

331413389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 331413389 is about 18204.7628108690. The cubic root of 331413389 is about 692.0274952322.

The spelling of 331413389 in words is "three hundred thirty-one million, four hundred thirteen thousand, three hundred eighty-nine".