1331297343 has 8 divisors (see below), whose sum is σ = 1972292400. Its totient is φ = 887531544.

The previous prime is 1331297309. The next prime is 1331297369. The reversal of 1331297343 is 3437921331.

It is a happy number.

1331297343 is a `hidden beast` number, since 1 + 331 + 297 + 34 + 3 = 666.

It is not a de Polignac number, because 1331297343 - 2⁹ = 1331296831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331297298 and 1331297307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331247343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24653628 + ... + 24653681.

It is an arithmetic number, because the mean of its divisors is an integer number (246536550).

Almost surely, 2^1331297343 is an apocalyptic number.

1331297343 is a deficient number, since it is larger than the sum of its proper divisors (640995057).

1331297343 is an equidigital number, since it uses as much as digits as its factorization.

1331297343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49307318 (or 49307312 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 1331297343 is about 36486.9475703299. The cubic root of 1331297343 is about 1100.0819065732.

The spelling of 1331297343 in words is "one billion, three hundred thirty-one million, two hundred ninety-seven thousand, three hundred forty-three".