330997431 has 4 divisors (see below), whose sum is σ = 441329912. Its totient is φ = 220664952.

The previous prime is 330997421. The next prime is 330997441. The reversal of 330997431 is 134799033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134799033 = 3 ⋅44933011.

It is an interprime number because it is at equal distance from previous prime (330997421) and next prime (330997441).

It is not a de Polignac number, because 330997431 - 2¹¹ = 330995383 is a prime.

It is a super-2 number, since 2×330997431² = 219118598657199522, which contains 22 as substring.

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 330997431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330997421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55166236 + ... + 55166241.

It is an arithmetic number, because the mean of its divisors is an integer number (110332478).

Almost surely, 2^330997431 is an apocalyptic number.

330997431 is a deficient number, since it is larger than the sum of its proper divisors (110332481).

330997431 is a wasteful number, since it uses less digits than its factorization.

330997431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110332480.

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 330997431 is about 18193.3347960180. The cubic root of 330997431 is about 691.7378520499.

The spelling of 330997431 in words is "three hundred thirty million, nine hundred ninety-seven thousand, four hundred thirty-one".