1331240353 has 8 divisors (see below), whose sum is σ = 1387628672. Its totient is φ = 1275926256.

The previous prime is 1331240341. The next prime is 1331240387. The reversal of 1331240353 is 3530421331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331240353 - 2⁵ = 1331240321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331040353) 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, 266025 + ... + 270982.

It is an arithmetic number, because the mean of its divisors is an integer number (173453584).

Almost surely, 2^1331240353 is an apocalyptic number.

It is an amenable number.

1331240353 is a deficient number, since it is larger than the sum of its proper divisors (56388319).

1331240353 is an equidigital number, since it uses as much as digits as its factorization.

1331240353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537111.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 1331240353 is about 36486.1665977669. The cubic root of 1331240353 is about 1100.0662089625.

Adding to 1331240353 its reverse (3530421331), we get a palindrome (4861661684).

The spelling of 1331240353 in words is "one billion, three hundred thirty-one million, two hundred forty thousand, three hundred fifty-three".