331222413 has 4 divisors (see below), whose sum is σ = 441629888. Its totient is φ = 220814940.

The previous prime is 331222403. The next prime is 331222417. The reversal of 331222413 is 314222133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 331222413 - 2⁶ = 331222349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331222413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331222417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55203733 + ... + 55203738.

It is an arithmetic number, because the mean of its divisors is an integer number (110407472).

Almost surely, 2^331222413 is an apocalyptic number.

It is an amenable number.

331222413 is a deficient number, since it is larger than the sum of its proper divisors (110407475).

331222413 is a wasteful number, since it uses less digits than its factorization.

331222413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110407474.

The product of its digits is 864, while the sum is 21.

The square root of 331222413 is about 18199.5168342459. The cubic root of 331222413 is about 691.8945434151.

Adding to 331222413 its reverse (314222133), we get a palindrome (645444546).

The spelling of 331222413 in words is "three hundred thirty-one million, two hundred twenty-two thousand, four hundred thirteen".