331430313 has 4 divisors (see below), whose sum is σ = 441907088. Its totient is φ = 220953540.

The previous prime is 331430273. The next prime is 331430329. The reversal of 331430313 is 313034133.

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, and also an emirpimes, since its reverse is a distinct semiprime: 313034133 = 3 ⋅104344711.

It is not a de Polignac number, because 331430313 - 2⁹ = 331429801 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 331430313.

It is not an unprimeable number, because it can be changed into a prime (331430383) 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, 55238383 + ... + 55238388.

It is an arithmetic number, because the mean of its divisors is an integer number (110476772).

Almost surely, 2^331430313 is an apocalyptic number.

It is an amenable number.

331430313 is a deficient number, since it is larger than the sum of its proper divisors (110476775).

331430313 is a wasteful number, since it uses less digits than its factorization.

331430313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110476774.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 331430313 is about 18205.2276283490. The cubic root of 331430313 is about 692.0392747542.

Adding to 331430313 its reverse (313034133), we get a palindrome (644464446).

The spelling of 331430313 in words is "three hundred thirty-one million, four hundred thirty thousand, three hundred thirteen".