331434413 has 2 divisors, whose sum is σ = 331434414. Its totient is φ = 331434412.

The previous prime is 331434409. The next prime is 331434421. The reversal of 331434413 is 314434133.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289612324 + 41822089 = 17018^2 + 6467^2 .

It is a cyclic number.

It is not a de Polignac number, because 331434413 - 2² = 331434409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331434463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165717206 + 165717207.

It is an arithmetic number, because the mean of its divisors is an integer number (165717207).

Almost surely, 2^331434413 is an apocalyptic number.

It is an amenable number.

331434413 is a deficient number, since it is larger than the sum of its proper divisors (1).

331434413 is an equidigital number, since it uses as much as digits as its factorization.

331434413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 26.

The square root of 331434413 is about 18205.3402330195. The cubic root of 331434413 is about 692.0421283951.

Adding to 331434413 its reverse (314434133), we get a palindrome (645868546).

The spelling of 331434413 in words is "three hundred thirty-one million, four hundred thirty-four thousand, four hundred thirteen".